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Air Quality Monitor

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31

Models Considered

91

Hours of Research

3

Experts Interviewed

894

Consumer Reviews Analyzed

U ndermining the gravity of air pollution is likely one of the biggest mistakes you can make as particles that are sometimes invisible to the naked eye reside in almost all homes. There is no need to underline how severe pollution is outdoors as almost all major U.S. cities are dealing with unprecedented, dangerous levels of PM2.5 pollution, among other issues, which take a toll on the life quality and expectancy of citizens.

Turning back to the indoor areas, research shows that an estimated 96% of homes are facing at least one air quality issue, dust being among the most common pollutants that people deal with. However, the issues do not start and end with dust and other fine-size particles pollution (generally known as PM2.5) as there are plenty of other culprits affecting air quality, including high humidity that creates proper conditions for mold and bacteria to grow and spread, emissions from materials and appliances, and so on. But how do you figure out if the air in your home is polluted or not? If you or a household member suffer from allergies, chances are that your symptoms start to trigger when you are at home. Nonetheless, this is only a vague indicator of a potential issue, not proof of it.

For proof, air quality monitors have been developed, these systems tracking and displaying a range of air pollution and air condition issues either indoors, outdoors, or in both mediums, to help you keep track of environmental conditions. Thus, before you head on to decide what you need to stabilize air quality at home or the office, first look into the recommendations we provide in the following lines to learn what the best air quality monitors available at the moment are.

7. Eve Room – Best for VOCs




Specifications & Features:


  • Sensors for: VOCs
  • Temperature display:
  • Humidity display:
  • Features: Apple HomeKit enabled; Connectivity with iOS/iPadOS 13.5 and later; Eve app
  • Display type: High-contrast e-ink display

  • Fahrenheit/Celsius: Both
  • Indoor/outdoor use: Indoor
  • Size: 2.1″ x 2.1″ x 0.5″
  • Power: Rechargeable battery
  • Warranty: 1 year




Regardless if you choose to use it with or without the app, the compact Eve Room monitor provides accurate readings of humidity, temperature, and VOCs due to the precision sensor technology it has been upgraded with. It is easy to set up and use, and the fact that a single charge of the battery lasts upward to 6 weeks adds to its appeal as you won’t have to constantly keep an eye on battery power to make sure it will continue to function uninterrupted for a long time.

If you have an Apple smartphone or tablet that features iOS/iPadOS 13.5 and later, you can connect the monitor to the smart device via Bluetooth and access the Eve app and access measurement graphs history that span over hours, days, weeks, months, and years. This lets you compare how different activities you do around the house impact air quality, as well as track how conditions differ during specific periods of the year, and more.

The smart feature that makes it shine, however, is the fact that it is Apple HomeKit enabled, which means that it can work with other appliances and devices you use via the home hub to automatically set them off as needed. For example, when VOC levels rise, it can trigger the smart air purifier to run until air quality is stabilized once more.

It lets you toggle through separate readings for each of the stats it tracks, so on the display, you will always find at glance the info that interests you most, whether it is air purity, temperature, or moistness. To switch between readings, just press the arrow on the display screen until you reach the setup that interests you. Even in the app, it lists graphs separately, as it does on the product display, making your efforts of tracking environmental conditions of interest easier.

Question: What are examples of VOCs?

Answer: Common VOCs that are present in the air we breathe, whether indoors or outdoors, include formaldehyde, toluene, xylene, methylene chloride, and ethylene glycol. VOCs are carbon composites that are involved in atmospheric photochemical reactions, with the exclusion of carbonic acid, CO and CO2, carbonates, and ammonium carbonate.

What we like:
  • Large, clear display lets you check at a glance temperature, humidity, and VOC levels
  • Can be connected to the compatible smart device of your choice via the home hub to automatically set whatever is needed on and off to maintain proper air quality at all times
  • Eve app provides detailed graphs of the measurements it has taken divided into hours, days, weeks, months, and years so that you monitor how specific day-to-day activities and changes around the house impact air quality
  • On a full charge, the battery lasts an estimated six weeks of uninterrupted use
What we dislike:
  • Limited by its exclusive compatibility with Apply products and technologies
  • Rather simplistic – measures only three air quality influencing elements
Overview

While there is no denying that the Eve Room does its job fantastically, the precision sensor technology with which it is fitted ensuring readings in regards to VOC levels are precise, the limitations of the product can be off-putting. This is why we chose to rank it lower than our other entries. Its limitation to Apple products, and the fact that aside from temperature and humidity, it only checks for VOCs, make it useful but not as impressive as the other products we will immediately cover.

If readings with this monitor indicate high levels of VOCs, what you need to do is use a system that features activated carbon filter as this media is designed to adsorb gaseous elements from the air. Check our selection of the best air purifiers for smoke as all of these products feature carbon-based filtering media that are highly effective in reducing VOCs.



6. ECOWITT WH0290 – Budget Pick




Specifications & Features:


  • Sensors for: PM2.5
  • Temperature display:
  • Humidity display:
  • Features: Air pollution level indicator; Battery power status indicator; Current and maximum value for PM2.5/AQI for 1h/24h/last reset
  • Display type: Color LCD screen

  • Fahrenheit/Celsius: Both
  • Indoor/outdoor use: Both
  • Size: Monitor – 3.4″ x 3.1″; Sensor – 2.8″ x 4″ x 2.7″
  • Power: 2 x rechargeable NiMH batteries; Built-in solar panel backup
  • Warranty: N/A




Invisible to the naked eye, particulate matter pollution is among the most severe issues that plague air purity, indoor and outdoor. With the ability to constantly monitor PM2.5 pollution, which is the presence of ultra-fine particulates in the air, the ECOWITT WH0290 is a smart addition to any household seeing how the ultra-fine particulate matter is among the main causes of respiratory issues like allergies, asthma development in children, and COPD.

The product is comprised of two pieces, the receiver and the sensor, the two having a transmission range of up to 300’ in the open air. There is one aspect we don’t like all that much, the 10-minute update rate, to be specific. With most systems, the update rate is at 60 seconds so that you receive readings in real-time. But this is not a downside that should throw you off as its precision and simplicity in use make up for it.

When used to monitor air conditions outdoors, the ECOWITT only provides you with data related to PM2.5 contamination. However, when used for the environment indoors, it also provides temperature and humidity readings. Air quality is tightly linked to these two elements as well, so you can see why it is important that it features the capability to track them. Rely on it to display humidity readings when levels range from 1% to 99% (this makes it usable even in an extra-damp space like the basement), and to display temperatures ranging from 14°F to 140°F.

It displays battery status so that you are kept aware of when charging is needed. If you accidentally skip on recharging, there is no need to worry as it will switch to the backup power provided by the included solar power until you fix the situation. For added convenience, it lets you pick between Celsius and Fahrenheit so that no matter what temperature measurement unit you are accustomed to, you won’t have trouble using the device.

The feature we like most is that it provides current and maximum values for PM2.5 and AQI for the last hour, the last 24 hours, and since the last reset, allowing you to track how air quality has evolved during that period according to what you did around the house. For ease of use, it lets you check at a glance conditions as it displays 6 indicator levels of air quality (Good, Moderate, Poor, Unhealthy, Severe, and Hazardous), making it much simpler for you to take action and remediate the situation in case there is a pollution problem.

Question: What does PM2.5 mean?

Answer: It stands for particulate matter 2.5, and it refers to particles that are suspended in the air and that have a 2.5-micrometer diameter. These are classified as ultra-fine particles and form because of chemical reactions, burning fuel, forest fires, and more. In big cities, PM2.5 pollution is the culprit for the occurrence of smog.

What we like:
  • You can use it either indoors or outdoors, displaying PM2.5 contamination levels in both environments
  • Intuitive grading of air quality due to the 6 indicators makes it convenient even for first-time users
  • Dual power source implies that even if you overlook recharging the batteries, it will continue to track conditions for a while as it can use solar power as a backup
  • When used indoors, it also displays temperature and RH conditions so that you are kept aware of all comfort-influencing elements in your home
What we dislike:
  • Durability is not this product’s strong point – treat it with care
  • Takes 10 minutes for it to update and display current air quality stats
Overview

Undoubtedly the best design trait of the ECOWITT WH0290 is that you can use it to track PM2.5 levels both indoors and outdoors. Thus, you will become more aware of your surroundings and the truth regarding air purity in your general area, not only in the comfort of your home. When used in enclosed spaces, it also reads RH and temperature as these are directly-influencing air quality elements that you need to keep track of and make appropriate changes to create ideal living conditions.

Research shows that HEPA filters can remove even the smallest-size particles of PM2.5, so this is the air filter media technology you need an air purifier to feature if PM2.5 levels are high in your home or office. Replace or clean the HEPA filter as required for it to upkeep a high particulate matter retention rate.



5. Temtop M2000C – Best for Indoor Use




Specifications & Features:


  • Sensors for: PM2.5; PM10; CO2; Particles
  • Temperature display:
  • Humidity display:
  • Features: Air pollution level indicator; Air quality alarm
  • Display type: TFT color LCD screen

  • Fahrenheit/Celsius: Both
  • Indoor/outdoor use: Indoor
  • Size: 8.6″ x 2.9″ x 1.5″
  • Power: 2200 mAh rechargeable lithium battery
  • Warranty: N/A




A handheld detector that comes at a reasonable price considering the amount of data it tracks and the high accuracy it flaunts, the Temtop M2000C is among the best-selling products in its niche for all the right reasons. It is widely regarded as the best model for indoor use, the high-quality formaldehyde sensor, laser particle sensor, and NDIR-based carbon dioxide sensor making it a trusting source for providing data regarding air quality in modern homes. With it, you are kept safe as you know what the sources of air pollution are so that you take immediate action to remedy situations when needed.

There are a total of 6 factors it monitors whenever you start it, and these include carbon dioxide, particles, PM2.5, PM10, temperature, and humidity. Its high accuracy is what gained it all of the following and praise, and this is best seen in the humidity readings. Customers reported that it always displayed higher levels than normal when the humidistats of their dehumidifiers would turn on. This indicates a good portrayal of RH levels.

Although it lacks smart home integration and there is no phone app that you can use to more conveniently check on the data it measures over your smart device, there are other features that it comprises which make up for its lacks. For one, it uses air pollution level indicators to show you at a glance whether air quality is good or bad, which makes it quite intuitive to use. Secondly, whenever pollution levels are high, an audio alarm goes off to alert you of the occurrence so that you know to take immediate action.

The TFT color LCD screen adds to its user-friendly design as it is easy to read off of. The simplistic button controls make it easy to use even by first-timers. It lets you pick whether you prefer that it displays temperature in Celsius or Fahrenheit so that you use the measurement system you are familiar with. Moreover, the battery lasts an estimated 6 hours before it requires recharging, which is more than sufficient for you to collect the data that interests you without any hassle.

Question: What is a safe CO2 level indoors?

Answer: Ideally, CO2 levels should be up to 1,000ppm max so that there won’t be any repercussions. When levels exceed 1,000ppm depending on how severe CO2 pollution spiked, you will start to feel drowsiness, headaches, increased heart rate, sleepiness, nausea, poor concentration, and lack of attention. When CO2 levels go beyond 40,000ppm there will be severe oxygen deprivation that may result in coma, brain damage, even death.

What we like:
  • Audio alarm sets off when pollution levels are high and your attention is required to remedy the situation
  • Air pollution level indicators displayed on the screen keep you updated with the current situation in an intuitive manner
  • TFT color LCD screen provides you with comprehensive displays of the six tracked air quality factors – temperature, humidity, CO2, particles, PM2.5, and PM10
  • Rechargeable battery lasts up to 6 hours of continuous use before depleting of power
What we dislike:
  • Lacks smart home integration
  • Does not feature a companion smartphone app
Overview

Among the most accurate entries available at the moment, the Temtop M2000C is sought-after for use in monitoring indoor air quality levels as it tracks a total of 6 different elements of interest, more precisely carbon dioxide concentrations, particles, PM2.5, PM10, temperature, and humidity. While not perfect as it lacks the smart features other models come with, seeing how it costs less too, it’s safe to say this is a smart deal.

One of the strong points of the Temtop M2000C is the high accuracy when reading RH levels. Use it to monitor the relative humidity in your chamber and if moistness levels are high, use one of these dehumidifiers for bedroom to stabilize RH and have a better night’s sleep.



4. IQAir AirVisual Pro – Best for Dust




Specifications & Features:


  • Sensors for: PM2.5; Carbon dioxide; AQI
  • Temperature display:
  • Humidity display:
  • Features: Air quality forecast; Air quality alert; Smart home integration; Android and iOS apps available
  • Display type: LED display

  • Fahrenheit/Celsius: Both
  • Indoor/outdoor use: Both
  • Size: 3.2″ x 7.2″ x 3.9″
  • Power: Lithium-ion battery
  • Warranty: 1 year




Let’s start with the features that make the IQAir AirVisual Pro the smartest model available yet. First off, we have the fact that it is smart home enabled. This implies that you have the possibility to connect it with your other home technologies for more convenient use. By integrating it, you can benefit from other perks as well, the device interacting with systems like the smart bladeless fan in the kitchen or the portable air conditioner that you just moved in the living room to turn them on automatically when their functioning is required to stabilize air quality.

Secondly, regardless if you have an iOS or Android smart device, you will find the app to install on it so that you have a better grasp over the tracking system and can see more easily how environmental conditions are in your home. Moreover, it sends alerts concerning air quality modifications over the app so that you can take immediate action if needed. As it tracks PM2.5, it makes for the perfect tool to keep track of dust levels in the air. Dust is an irritant particle and many people who suffer from allergies witness severe symptoms in dusty environments. Allergy relief in this case can only be achieved through close monitoring of air conditions and dust reduction in the air through the use of a purifier that uses HEPA filtration.

While what we said up to now should be more than enough to convince you that it’s worth every cent, we are far from done. This is an indoor and outdoor system, providing you with concomitant readings of air conditions not only for the environment in your house but that outside of it too. Relying on in-house data and machine learning, it is even able to forecast air conditions in over ten thousand locations all over the world to help you better prepare for upcoming activities.

Despite the tech-forward profile it flaunts to achieve the high, likely unparalleled accuracy it provides, it manages to stay quite simplistic in its design. What you will surely appreciate is that it offers on-screen health recommendations, the monitor being thought out from start to finish as a life quality improvement device, not only a simple monitor for various pollutants like most of its competitors.

Question: Is dust PM2.5?

Answer: Fine dust is known as PM2.5 as a single particle of it measures less than 2.5 micrometers in diameter, marking all of the credentials for this specific classification.

What we like:
  • Among the few products that can measure conditions indoors, as well as outside
  • Smart home enabled – you have the possibility to integrate it and benefit from automatic solving of air quality issues as soon as they are intercepted by the monitor
  • IFTTT allows you to set parameters that it uses for guidance when monitoring pollution levels to send alerts if the threshold is passed
  • Apps are available for Android and iOS devices – not limited to a single operating system platform
  • Can be used with or without a smartphone, depending on what conveniences you most at that moment
What we dislike:
  • Among the most expensive entries
  • Lacks the ability to monitor VOC levels
Overview

While the fact that it provides readings both indoors and outdoors makes it worth the money on its own, what shines is that the IQAir AirVisual Pro monitor doesn’t only measure PM2.5, AQI, RH, temperature, and CO2 levels, but that it features air quality forecasts as well. Thus, it even helps you prepare for upcoming events so that you can plan activities when it’s safe and healthy to do them.

See our selection of the best air purifiers for dust to rid the air in your home of this pollutant and create safer living conditions as a result.



3. EG AIR Pollution Monitor – Editor’s Choice




Specifications & Features:


  • Sensors for: Formaldehyde; Total VOCs; PM2.5; PM1.0; PM10
  • Temperature display:
  • Humidity display:
  • Features: Air pollution level indicator
  • Display type: 2.8″, color 240 x 320 LCD

  • Fahrenheit/Celsius: Both
  • Indoor/outdoor use: Indoor
  • Size: 5.9″ x 2.8″ x 1.7″
  • Power: Lithium polymer battery
  • Warranty: N/A




The EG AIR is the best-selling product at the moment. What likely led to it reaching this status is its accuracy, the affordable asking price, the positive reception received from satisfied customers, as well as the fact that is tests for more air quality conditions than most of its competitors. It is designed for use only indoors, keep this aspect in mind. With it, you will be kept aware of seven different air quality factors which include humidity (comes in handy to combat mold growth), temperature (upkeep thermal comfort easier and more accurately), formaldehyde, total VOCs, PM1.0, PM2.5, and PM10.

We favor it as opposed to other entries as high range and accuracy in its measurements, which makes it a reliable source for keeping an eye on environmental conditions in your home. While it is true that battery life could have used improvement, this is not necessarily an issue as you can keep it charged when you want to use it uninterrupted for monitoring. You can set alarms for various formaldehyde levels so that whenever the threshold you established is passed, the device lets you know to turn on the smoke air purifier and clear the air of the health-threatening pollutants.

Aside from the adjustable alarm, it indicates air pollution levels in quite an intuitive manner as on its display it clearly shows whether the air is fresh and healthy, or if conditions are not suited for your well-being. Moreover, the button controls make it easy to use even by folks who have never had contact with a system of the sort before, a major advantage for those who are not tech-savvy.

Question: How dangerous is formaldehyde?

Answer: While a common presence in the air indoors, formaldehyde is quite dangerous for human health. Exposure to low levels over a long period, not taking any action to clear it from the air, repercussions will eventually include asthma-like symptoms and respiratory issues, as well as skin irritations.

What we like:
  • Keeps track of 7 different air quality parameters – RH, temperature, PM1.0, PM2.5, PM10, total VOCs, and formaldehyde
  • Helps you keep allergies at bay at home as you can monitor when VOC levels rise to know that it is time to change the activated carbon filter on the air purifier
  • You can set alarms that go off when formaldehyde levels exceed chosen thresholds
  • Air pollution level indicators conveyed on the display provide an intuitive means to keep track of conditions
  • Best-selling product available – satisfied customers and fair price make it a sought-after option
What we dislike:
  • Some users reported issues comprehending calibration instructions
  • The battery does not last very long between recharges
Overview

As the EG AIR is the best seller in its niche and delivers readings for seven separate air quality issues of interest, it is a no-brainer why we picked it as our favorite. Easy to use and reliable as it is among the most precise products, despite the rather affordable asking price you can rely on its services for years to come.

To get rid of formaldehyde, check out the Alen BreatheSmart air purifier here. Available in four different options, one of which tackles formaldehyde and other VOCs, it is widely recognized as one of the most efficient air filtration systems existent.



2. Airthings Wave Plus – Best for Home




Specifications & Features:


  • Sensors for: Radon; Carbon dioxide; Total VOCs; Air pressure
  • Temperature display:
  • Humidity display:
  • Features: Color-coded visual air quality indication; Bluetooth connectivity; Wave app; Smart home integration
  • Display type:

  • Fahrenheit/Celsius: Both
  • Indoor/outdoor use: Indoor
  • Size: 4.7″ diameter
  • Power: 2 x AA batteries
  • Warranty: 1 year




While the price tag is not the cheapest, this is not going to be an issue if you seek accuracy and extensive tracking of indoor conditions to make your home a true haven for those living inside of it. If the fact that CES and Time magazine have awarded it in 2019 for its functioning is not enough to convince you that this is a must-have in any modern home, our detailed review surely will. Let’s start from the beginning – what the Airthings can do for you. It features a total of 6 sensors to track the most important air quality aspects in any home, which include temperature, RH, air pressure, total VOCs, CO2, and radon.

Not many monitors detect radon, this aspect alone separating it from the competition and putting it ahead as radon is among the most dangerous pollutants that could affect a household. With this tool by your side, you won’t have to wonder whether basement insulation or adding that crawl space dehumidifier are actions you should perform as you will get your definitive answer based on the provided readings of the monitor. Just set the device up, turn it on, pair it with your smartphone, and log into the Airthings app to see a detailed log of radon results and fluctuations, as well as detailed analysis regarding the other parameters it monitors.

For your convenience, you can receive on the spot visual reports regarding air conditions by simply waving in front of it. When you do so, a color-coded visual indicator of air quality will appear. The color green indicates good conditions, yellow indicates fair conditions, whereas red shows that air quality is poor. Whenever the ring is red, turn on the app immediately to see which of the 6 tracked parameters is causing the issue and make adjustments in your home accordingly to return air quality to a healthy, safe level.

Question: What are the symptoms of radon in your home?

Answer: Keeping an eye on health shifts helps spot potential radon pollution indoors. When radon is present in your home, some of the symptoms that you will experience include difficulty breathing, tightness in the chest, difficulties swallowing, and violent coughing. If you have been exposed to radon and you are a smoker, you must quit smoking immediately as health repercussions are exponentially worsened.

What we like:
  • Smart home integration is possible, being compatible with Alexa, IFTTT, and Google Assistant
  • Color-coded indication of current indoor stats – greed is Good, yellow is Fair, and red is Poor
  • Uses 6 sensors to keep you aware of the most important environmental factors and keep a safe home – RH, temperature, air pressure, radon, CO2, and total VOCs
  • Bluetooth connectivity provides you with the capability to pair it with the proprietary app or log onto the Dashboard online to more conveniently analyze and track air quality insights
  • Award-winning product – has received awards from CES and Time magazine for its performance, accuracy, and innovative design
Overview

There are no actual negative comments that we can make about the Airthings Wave Plus as this radon detecting monitor delivers on all fronts, accuracy being its strong point, hands down. A little on the expensive side but explainable seeing how this is an actual life-saver considering the air quality issues it tracks, the modern yet simplistically designed device is a must-have in any modern household.

Proceed to encapsulate the crawl space if you want to keep radon from seeping in and polluting your entire home at one point or another, putting you at immediate severe risk.



1. uHoo 9-in-1 Indoor Air Sensor – Best for Sale




Specifications & Features:


  • Sensors for: PM2.5; Carbon dioxide; Ozone; Carbon monoxide; Nitrogen dioxide; Air pressure; VOCs
  • Temperature display:
  • Humidity display:
  • Features: Proprietary app; WeMo; SmartThinQ; Smart home enabled
  • Display type:

  • Fahrenheit/Celsius: Both
  • Indoor/outdoor use: Indoor
  • Size: 3.4″ x 3.4″ x 6.5″
  • Power: Micro USB power adapter; 5V DC external power adapter
  • Warranty: 1 year




Hands-down the best product that you can use to track air pollution and other quality-influencing factors in your home, as the name suggests, the uHoo 9-in-1 addresses nine different issues, more precisely RH, temperature, CO, CO2, NO2, ozone, air pressure, VOCs, and PM2.5. Thus, whether you live in a household of smokers and you want to see how that influences air purity, there is fine dust lingering in the air, there are foul odors yet you cannot pinpoint their source, or there is a musty smell that you don’t know whether it’s linked to mold growth or not, this is the device that will provide you with the answers you need.

However, what makes it reign supreme isn’t just the extensive monitoring it provides but its smart design as well. Its smart home integration capabilities make it the ultimate tool for air quality improvement in any modern home as it works with Alexa, Ecobee, Nest, iRobot, Netatmo, WeMo, SmarThinQ, IFTTT, and even the Google Assistant. Thus, you can use it to automatically trigger the operation of other smart devices in your home so that they start their operation whenever needed to upkeep air quality and ensure pollution and thermal comfort won’t ever be issues.

The app is another highlight as through it, you can monitor each room in the house, track progress regarding air quality improvement, automatically turn on the smart air purifier to clear the air of pollutants, and customize and receive alerts and notifications regarding specific issues that the device monitors. You can even share the data with friends and family so that you can help each other out to create better living conditions and lead healthier lives.

Question: Is ozone safe to breathe?

Answer: No. Even in low amounts, ozone is harmful to your health as it causes reactions that include coughing, chest pain, shortness of breath, and throat irritation. If you use an ozone-generating air purifier, our advice is to let it run when you are not around and wait 1-2 hours for the ozone in the air to clear before you use the room where it has operated.

What we like:
  • Can connect to a wide range of smart devices – works with WeMo, Alexa, Ecobee, Google Assistant, IFTTT, iRobot, and SmarThinQ
  • You can receive alerts over the phone and customize notifications as you see fit for the monitor to keep you aware of air quality at all times
  • If you have a smart air purifier, the uHoo can automatically turn it on when air pollution levels exceed set parameters to stabilize air purity
  • Via the app, you can receive personalized tips regarding air quality improvement
  • Monitors 9 different environmental elements
Overview

Whether you want to keep an eye on RH to know when you should turn on the humidifier in the nursery, or you just want to monitor PM2.5 levels to beware when the allergy air purifier should run to keep you safe, the uHoo 9-in-1 is the air condition tracking device you should use. There are no downsides to this product, the only minor issue with it being the high price tag. However, if you have the budget for it, considering that it monitors the highest number of air quality issues and that it is unparalleled in accuracy, it’s worth every cent.

Unlike ozone generators that exclusively produce ozone to mask odors and clear certain air contamination issues, ionic air purifiers release smaller amounts of ozone in their operation, which makes them viable solutions for air quality improvement, especially considering the high success rate ionizers have in the fight against allergies.



Top 7 Comparison

Photo Products Price
uHoo 9-in-1 Indoor Air Sensor Image
Best for Sale
1. uHoo 9-in-1 Indoor Air Sensor
  • Size: 3.4″ x 3.4″ x 6.5″
  • Sensors: PM2.5; Carbon dioxide; Ozone; Carbon monoxide; Nitrogen dioxide; Air pressure; VOCs
  • Temperature reading:
  • Humidity reading:
  • Smart home integration: Yes – it works with Alexa, Ecobee, Google Assistant, IFTTT
  • Proprietary app:
  • Other features: WeMo; SmartThinQ
  • Fahrenheit/Celsius selection: Both
  • Display:
  • Indoor/outdoor use: Indoor
  • Power: Micro USB power adapter; 5V DC external power adapter
  • Warranty: 1 year
Airthings Wave Plus Image
Best for Home
2. Airthings Wave Plus
  • Size: 4.7″ diameter
  • Sensors: Radon; Carbon dioxide; Total VOCs; Air pressure
  • Temperature reading:
  • Humidity reading:
  • Smart home integration: Yes – it works with Alexa, Google Assistant, IFTTT
  • Proprietary app:
  • Other features: Color-coded visual air quality indication; Bluetooth connectivity
  • Fahrenheit/Celsius selection: Both
  • Display:
  • Indoor/outdoor use: Indoor
  • Power: 2 x AA batteries
  • Warranty: 1 year
EG AIR Pollution Monitor Image
Editor’s Choice
3. EG AIR Pollution Monitor
  • Size: 5.9″ x 2.8″ x 1.7″
  • Sensors: Formaldehyde; Total VOCs; PM2.5; PM1.0; PM10
  • Temperature reading:
  • Humidity reading:
  • Smart home integration:
  • Proprietary app:
  • Other features: Air pollution level indicator
  • Fahrenheit/Celsius selection: Both
  • Display: 2.8″, color 240 x 320 LCD
  • Indoor/outdoor use: Indoor
  • Power: Lithium polymer battery
  • Warranty: N/A
IQAir AirVisual Pro Image
Best for Dust
4. IQAir AirVisual Pro
  • Size: 3.2″ x 7.2″ x 3.9″
  • Sensors: PM2.5; Carbon dioxide; AQI
  • Temperature reading:
  • Humidity reading:
  • Smart home integration:
  • Proprietary app:
  • Other features: Air quality forecast; Air quality alert
  • Fahrenheit/Celsius selection: Both
  • Display: LED display
  • Indoor/outdoor use: Both
  • Power: Lithium-ion battery
  • Warranty: 1 year
Temtop M2000C Image
Best for Indoor Use
5. Temtop M2000C
  • Size: 8.6″ x 2.9″ x 1.5″
  • Sensors: PM2.5; PM10; CO2; Particles
  • Temperature reading:
  • Humidity reading:
  • Smart home integration:
  • Proprietary app:
  • Other features: Air pollution level indicator; Air quality alarm
  • Fahrenheit/Celsius selection: Both
  • Display: TFT color LCD screen
  • Indoor/outdoor use: Indoor
  • Power: 2200 mAh rechargeable lithium battery
  • Warranty: N/A
ECOWITT WH0290 Image
Budget Pick
6. ECOWITT WH0290
  • Size: Monitor – 3.4″ x 3.1″; Sensor – 2.8″ x 4″ x 2.7″
  • Sensors: PM2.5
  • Temperature reading:
  • Humidity reading:
  • Smart home integration:
  • Proprietary app:
  • Other features: Air pollution level indicator; Battery power status indicator; Current and maximum value for PM2.5/AQI for 1h/24h/last reset
  • Fahrenheit/Celsius selection: Both
  • Display: Color LCD screen
  • Indoor/outdoor use: Both
  • Power: 2 x rechargeable NiMH batteries; Built-in solar panel backup
  • Warranty: N/A
Eve Room Image
Best for VOCs
7. Eve Room
  • Size: 2.1″ x 2.1″ x 0.5″
  • Sensors: VOCs
  • Temperature reading:
  • Humidity reading:
  • Smart home integration:
  • Proprietary app:
  • Other features: Connectivity with iOS/iPadOS 13.5 and later
  • Fahrenheit/Celsius selection: Both
  • Display: High-contrast e-ink display
  • Indoor/outdoor use: Indoor
  • Power: Rechargeable battery
  • Warranty: 1 year

What Are the Major Indoor Air Pollutants?

While the general perception is that the air outdoors is contaminated, which is true, some major cities in the U.S. like San Francisco, St. Louis, Philadelphia, and Pittsburgh, to name a few, have alarmingly high PM2.5 pollution levels for more than two-thirds of the year, the truth of the matter is that the air indoors is still likely considerably more polluted. As frightening as it sounds, it is true, and woefully, detection of poor air quality is at times impossible without special means like using an air quality monitor as some pollution-causing agents and issues are undetectable otherwise. Let’s see what the major and common pollutants are.

#1 – Mold

While there are over 100,000 types of mold out there, only some pose a health threat. When it comes to indoor mold, there are 14 types that are considered common and you might deal with at one point or another unless you use a dehumidifier in the basement and other problematic areas of your home where RH tends to rise uncontrollably and quick. Of these 14 types, black mold or Stachybotrys is the one you should fear most as it causes irritations to the eyes and mucous membranes, rashes, headaches, sneezing, coughing, and chronic fatigue.

How should you proceed when dealing with mold?

As aforementioned, use dehumidification systems wherever they are needed. Use an indoor hygrometer track humidity levels inside the house, and wherever RH levels exceed 60%, lower air moistness to prevent mold growth by simply installing an appropriately-sized dehumidifier in that specific area.

More often than you would expect, the source of mold spores lingering in the air is the basement as through its nature it is a damp area. Insulate the basement and preferably install a basement dehumidifier as well to make sure dampness won’t ever rise, ensuring unbeatable mold growth prevention.

#2 – Radon

It is an odorless and colorless gas that is naturally produced when the earth breaks down. Exposure to radon has a wide range of health repercussions, but likely the scariest is the increased risk of developing lung cancer, which is exponentially increased if smokers inhale the pollutant.

How should you proceed when dealing with radon?

Generally, the low levels are the ones where radon can seep in. What you can do is to insulate the basement or encapsulate the crawl space, depending on which of the two your home has. This is the single most effective solution in preventing radon from ever entering the living quarters.

#3 – Smoke

Environmental tobacco smoke contains thousands of chemical ingredients that evidently all put your health at risk. While short-term exposure is not that severe, causing only irritation of the eyes, nose, and throat, long-term exposure is a different matter, considerably more serious as health repercussions include frequent asthma attacks, wheezing, bronchitis, pneumonia, and even lung cancer.

How should you proceed when dealing with environmental tobacco smoke?

Unsurprisingly, the best course of action is to stop smoking inside the house. If for any reason this is not a viable solution, your other option is to install an air purifier for smoke as the specialized system uses activated carbon filter media to target and adsorb smoke particles.

#4 – Carbon monoxide

The invisible, odorless gas contaminates the air as a result of incomplete combustion of fossil fuels. Among the symptoms that you inevitably experience as a result of its presence in the air are included nausea, tiredness, dizziness, and confusion.

How should you proceed when dealing with CO?

All of the combustion appliances in your home must be checked and serviced routinely to make sure that they are installed correctly and work normally. Prevention is key here, so never skip on the annual professional check-ups!

#5 – Lead

If you are familiar with the Flint scandal surrounding lead contamination of the drinking water, then you have an idea of just how dangerous lead is for our health. But it isn’t a contaminant that only affects the water as it can become airborne too, leading to dangerous air pollution issues. Some of the risks of lead exposure include damage to red blood cells, as well as major organs that include the brain and the kidneys. In children, lead is all the more dangerous as it causes behavioral problems, delayed development, and even lower IQ levels, negatively impacting their growth and putting their overall health at immense risk.

How should you proceed when dealing with lead?

Until 1978, lead was widely used in house paint, which means that if your house has been painted before this year, lead particles could linger in the air you breathe. What you should ideally do is take it down and repaint. If this is not possible, at least mop the floors 2-3 times per week, wipe window ledges and flat areas 1-2 times per week, and keep the play areas of your kids spotless.

Test your water for lead as it is a surprisingly common presence in municipal and well water supplies. If you have lead or other contaminants in it, install an alkaline water ionizer as the machine has the potential to provide you with high pH alkaline water if you choose so, and all models are fitted with water filters that eliminate impurities.



F.A.Q.

What is the purpose of the air quality monitor?

Answer: It tracks air conditions and common pollutants, providing you with reports regarding their stats in real-time. This makes the device useful in air quality improvement as you can keep track of elements and aspects that require improvement.

Can these devices detect mold?

Answer: No, they do not flaunt the capability to provide details regarding air pollution with mold spores. However, they do track air conditions that are tightly linked to the presence or absence of mold in a house, more precisely humidity levels. When the monitor displays humidity levels that pass 60%, the higher the worse, it means that mold growth is likely an issue in your living quarters.

What are the symptoms of poor air quality?

Answer: The answer is quite complex as it depends on what sort of issues cause air quality to be poor in your home. However, to shortly answer the question at hand, some of the symptoms to look for include are fatigue, dizziness, headache, skin dryness, irritations, sinus congestion, coughing, allergy attacks, and breathlessness.

Are air purifiers worth it?

Answer: Yes, if you know what to look for when you buy the air purifier, the system can greatly benefit air quality in your home. As the system is specifically designed to reduce indoor pollution, it means that the air you breathe is considerably cleaner and safer for your health as a result of its operation.

Are air quality monitors worth it?

Answer: Yes, especially seeing how these products generally don’t cost much either, even the cheapest models providing sufficient data regarding living conditions to give you a clear picture of what areas you need to focus on in order to improve air quality, and ultimately your health, as a result.


Conclusion

Whether the source of poor air quality is high humidity, VOC contamination, radon in the living quarters, or PM2.5 pollution above acceptable levels, the only tool that you can test to see what is happening to the air in your home is the air quality tracker. The products we previously reviewed and compared are the best available at the moment, hands down, an aspect you likely agree to as well if you read our input. But before we end and you draw a conclusion, picking the system that you want to rely on to test air purity and quality in your home from now on, let’s first visit some of the best entries we discussed to help you make up your mind.

Best air quality monitor on the market: uHoo 9-in-1 Indoor Air Sensor

As implied by the name, it provides 9 separate air quality readings. These stats include ozone levels, RH, temperature, NO2, CO, CO2, total VOCs, air pressure, and PM2.5. You can check the measurements over your smartphone or tablet, and as this is a smart home enabled device, you can even use it to set off the air purifier whenever air pollution levels rise to tackle the problem before it can affect your health in any manner. This way, you are truly kept safe when you are home.

Best indoor air quality monitor: Temtop M2000C

The three aspects that affect indoor air most are – improper humidity, lack of thermal comfort, and airborne particle pollution. Keep track of all three aspects with the M2000C, a monitor that provides accurate readings for temperature and humidity to keep you aware of how much you should run the air conditioner or heater (depending on the season), or when you should turn on the humidifier or the dehumidifier depending on the direction in which the RH level is going. When it comes to pollution, it tracks PM2.5, PM10, and carbon dioxide in the air, so with the readings it provides, you can optimize your use of the air filtration system to ensure proper living conditions at home or at the office.

Best home air quality monitor: Airthings Wave Plus

Among the most modern products we reviewed, the Airthings is the best for home use as it features smart home integration, which means that you can make it work with Alexa, Google Assistant, and IFTTT to more conveniently track air quality, and set off smart appliances and devices in your home that can improve it when needed automatically. Needless to say, the fact that it can monitor radon levels is a major advantage for home use as the odorless, invisible gas poses an immense health threat, and not many products test for it.

Best budget air quality monitor: ECOWITT WH0290

Available for less than $100, which makes it the go-to option for customers who are on a budget, the ECOWITT is surprisingly reliable despite the cheap asking price. Dust air pollution is among the most frequent issue with indoor air, and as it tracks PM2.5, you will be provided with accurate readings regarding fine dust levels in your home. What we like most about it, however, is that it can be used to track air quality indoors, as well as outdoors, a feat not many models are capable of. It even comes with special features like intuitive air pollution level indicators, and providing of current maximum levels for AQI for the last hour, the last day, or since the last reset, so you can see why we consider it the value deal of the moment, featuring modern functions without asking much upfront.

Tobey Hunter
Tobey Hunter
Tobey is the editor-in-chief at Optima Institute, his prior experience as a niche product reviewer in air quality improvement systems helping shape his path to conduct thorough research toward selecting and analyzing products so that customers are satisfied with the provided recommendations. During his carrier, Tobey also gathered technical input that makes him well versed in understanding advancements in modern systems, helping readers in turn to better understand how modern devices help improve life quality.