HouseFresh is reader-supported. When you buy through links on our site, we may earn an affiliate commission. Learn more

8 Best Air Quality Monitors

Last updated June 3, 2021

This post may contain affiliate links.

Author
Author avatar Danny Ashton

Danny as been writing about air purifiers for 10+ years. He is a major fan of home technology, which makes him the perfect person to test and evaluate products for HouseFresh

Most people don’t consider the importance of the quality of air in their homes. When left unchecked, poor air quality can lead to some fairly serious health concerns. Exposure to substandard indoor air quality can result in dizziness, headaches, and fatigue in the short term, all of which can lead to respiratory diseases, cancer, and heart disease in the long term. 

Thankfully, air quality monitors can detect different types of pollutants in the home, thanks to multiple in-built sensors. These sensors detect pollutants by drawing the air in and passing it through a sensor that detects carbon monoxide, carbon dioxide, radon, and more. 

Typically, you can find three different types of air quality monitors on the market:

  • Tabletop or floor models, 
  • Wall or ceiling mounted models
  • Portable, handheld models that can be carried from room to room 

When choosing the right air quality monitor for you, consider how much information is adequate for your needs. For example, if you just want a basic understanding of the air quality in your home, we recommend the Stellate Smart Indoor Air Quality Monitor. Alternatively, if you’d like a comprehensive reading of the air quality, go for the uHoo Indoor Air Quality Sensor.

To find our top air quality monitors, we have closely compared detailed unit specifications, such as the type of chemicals each unit measures and the level of detailed readings they give. We also looked through customer reviews and experiences concerning ease of use, accuracy, and level of integration with smart technology.

1. Huma-i (HI-150)

Huma-i (HI-150), Advanced Portable Air Quality Monitor Indoor Outdoor Which Measures CO2, VOC, Particle Matter (PM2.5 and PM10), Temperature, Humidity - Black

The Huma-I (HI-150) air quality monitor is a completely portable unit, measuring 1.6 x 3.6 x 1.5 inches, weighing approximately 2.1 ounces, and is touted as one of the best air quality monitors money can buy. This monitor gives the user a choice between viewing the air quality in the form of a graph, or as icons. The icon mode shows you a “smiley face” when the air quality is good, and a “masked face” when the quality of the air is bad. When used in graph mode, the information provided is more detailed, displaying accurate levels of each measurement taken.

At the touch of a button, you can monitor the surrounding air quality, and the built-in fan efficiently draws in the air around you, giving real-time results. Through the use of its advanced sensors, this monitor provides you with the data necessary to understand your home air quality.

The HI-150 is the same unit that we use here when doing our situational reviews and worked perfectly to give us an idea of the performance of air purifiers for our study that looked into the best air purifiers for vaping.

Number of Sensors: Five – CO2, VOC, PM2.5 & PM10, Temperature and Humidity

Battery life: Approximately one hour

What we love:

  • It can be used anywhere due to its small size
  • It has a high-quality OLED display
  • Many meters measure PM2.5 only, but this unit measures PM10 as well
  • The power button also operates the six-screen navigation

We don’t like this as much:

  • It doesn’t have a “memory”, so any readings taken are not stored when switched off
  • The battery could last longer
Huma-i (HI-150), Advanced Portable Air Quality Monitor Indoor Outdoor Which Measures CO2, VOC, Particle Matter (PM2.5 and PM10), Temperature, Humidity - Black
  • REAL-TIME AIR QUALITY MEASURE - Monitor air quality with the touch of a button, measuring levels of CO2, Volatile Organic Compounds (VOC), and Particle Matter ((PM2.5 & PM10). Also measure temperature and humidity in your surroundings.
  • PORTABILITY - With pocket-sized portability, take the Huma-i with you at all times to measure the quality of air around you. Great for both indoor and outdoor environments.
  • ADVANCED FAN & SENSORS – The Huma-i has a built-in fan to quickly draw in ambient air to allow real-time measurements
  • EASY OF USE - Easily read real time air quality results in graph mode or Icon mode through the OLED display by toggling a one touch button. And easily view the Status LED lights that lets you quickly know the status of CO2, VOC, and particle matter.
  • DURABLE & STYLISH - Sturdy and designed focused outer casing looks great while protecting your Huma-i device. Have peace of mind when carrying your Huma-i device during your activities.

2. Awair Element Indoor Air Quality Monitor – AQM8002A

Awair Element Indoor Air Quality Monitor - AQM8002A

The Awair Element Indoor Air Quality Monitor has a sleek design, resembling a small speaker, and is Wi-Fi and Bluetooth enabled. Measuring 6.06 x 1.8 x 3.33 inches, weighing 16 ounces, its box-like shape suggests portability, however, this device is instead powered via a 5V power adapter and the included USB cable. The front of the unit has a matrix of LEDs displaying numbers as well as bars to indicate the levels of air quality. There is also an LED in the top right corner which if green indicates the air is satisfactory. Red means that the air is of poor quality.

This air quality monitor can connect to smart assistants such as Google Assistant and Amazon’s Alexa. The app will give readings from all of the unit’s five sensors, helping you identify any air pollution problems that are present.

Number of Sensors: Five – CO2, VOC, PM2.5 & PM10, Temperature and Humidity

Battery life: N/A

What we love:

  • The display can be adjusted to show individual readings
  • You can receive alerts on your smartphone
  • With the app, you can track air quality changes over time
  • It can be integrated with smart-home platforms

We don’t like this as much:

  • The night light is not customizable
  • Some users have reported difficulties navigating the app
Awair Element Indoor Air Quality Monitor - AQM8002A
  • KNOW YOUR AIR - Track temperature, humidity, carbon dioxide (CO2), chemicals (VOCs), and particulate matter (PM2. 5) in your space
  • GAIN ACTIONABLE INSIGHT - Receive real-time insight into your indoor air quality and track changes over time in the Awair Home app
  • TRANSFORM YOUR ENVIRONMENT - Browse in-app feedback and tips to improve the health of your space
  • SMART ASSISTANT INTEGRATIONS - Seamlessly integrate Element with Alexa or Google Assistant
  • WI-FI CONNECTED DEVICE - Awair Element requires Bluetooth (for setup) and a 2.4 GHz Wi-Fi Connection.

3. YVELINES Air Quality Tester

Air Quality Monitor YVELINES Air Quality Tester for CO2 Formaldehyde(HCHO) TVOC PM2.5/PM10 Multifunctional Air Gas Detector Real Time Data&Mean Value Recording for Home Office(White)

This 2021 model of Yvelines air quality monitor has a pleasing wedge design. Measuring approximately 5 x 3 x 2 inches, it can easily be situated in any room in your home. Powered by a rechargeable lithium battery, this monitor has a built-in low power consumption processing chip to conserve battery life.

Using DART electrochemical sensors, this multi-function air quality monitor provides accurate readings from its sensors, and the large LCD screen clearly displays real-time measurements, with air quality light indicators.

This monitor is also simple to use. The function buttons are on the side of the device and include the power button, mode buttons, as well as a calibration button. Once the monitor self-calibrates, the easy-to-read full-page screen gives you all the information on the total air quality of your room.

Number of Sensors: Four – CO2, TVOC, PM2.5/PM10 & Formaldehyde

Battery life: 8-12 hours

What we love:

  • It has a large, easily readable color display
  • The monitor gives guidelines on how to fix any air quality issues
  • Detecting Formaldehyde, a colorless, irritating gas, is a bonus
  • After initial self-calibration, measurements are accurate

We don’t like this as much:

  • Temperature and humidity readings are not available
  • One of the operating buttons is there for design purposes only
Sale
Air Quality Monitor YVELINES Air Quality Tester for CO2 Formaldehyde(HCHO) TVOC PM2.5/PM10 Multifunctional Air Gas Detector Real Time Data&Mean Value Recording for Home Office(White)
  • 🏠【Know Your Air】YVELINES 2021 Newest Indoor Air Quality Monitor built in DART Electrochemical Sensors will provide you trustworthy measurements such as air of Carbon Dioxide(CO2), Formaldehyde(HCHO), Volatile Organic Compound(TVOC), Particle Matter(PM2.5/PM10).Those readings involve detection of toluene, harmful chemical substances and pollutants in the air such as carbon dioxide, carbon monoxide,smoke,fog,dust,alcohol,glue,paint,ink and others.
  • 🏠【2021 Newly Design】2021 Newly design placement air monitor built with LCD Color Screen Digital Display. This air monitor is easy to operate which just pressing the functional button and one full page design make everyone can easy to read all the real time readings at the same time. It also can offer mean value for each air and overall environment quality color indication which will let you know you need to take some actions if you air is unsafe.
  • 🏠【Rechargeable Battery】 YVELINES Air Quality Tester has a 2000mAn rechargeable lithium battery and packed with USB cable that can last up to 8 hours. Built-in low power consumption processing chip, can carry on long time uninterrupted monitoring to air quality. It will always take care of you and your family health.
  • 🏠【Your Health Assistant】YVELINES CO2 Formaldehyde HCHO/TVOC and PM2.5/PM10 real time gas monitoring to prevent any respiratory disease. Size about 5.83" * 2.76" * 1.18" It's easy to carry the intelligent air quality monitor that can help us detect the gas air pollution in household, kitchen, bedroom, office, school, car, hotel, travel, camping, party etc...especially in which has baby,child and pregnant woman.
  • 🏠【Kindly Note】Please be aware this air quality monitor is for home indoor place. We do recommend using the monitor as a stationary unit and focus on 30 and 60 minute mean values and overall environment quality indication because long-term monitoring, the real-time data exist instability. If you have any questions regarding monitor functionality or you need any assistance on how to re-calibrate the sensors, please contact us via email; we will always be your site.

4. Stellate Smart Indoor Air Quality Monitor Detector Sensor

Stellate Smart Indoor Air Quality Monitor Detector Sensor - HCHO/Formaldehyde, TVOC/Organic Particulate Matter, AQI/Air Quality Index Pollution, Temperature & Humidity, Portable for Home, Office

The Stellate AQ100 is an extremely compact, six-in-one multi-functional air quality monitor, measuring 3.94 x 2.95 x 2.95 inches, and weighs just over seven ounces. The AQ100 is portable and is supplied with a lithium battery, rechargeable via its integrated micro USB port.

It has multiple sensors and a built-in fan to measure the levels of any particulates or gases in the room. It also comes equipped with a built-in clock and, according to the manufacturer, a record function.

The large color LCD screen displays real-time pollutant measurement levels, along with an Air Quality Index (AQI), showing the current pollution value of the room, which allows you to pinpoint the source of any toxic fumes in your home.

Number of Sensors: Five – Formaldehyde, TVOC, PM2.5, Temperature, and Humidity

Battery life: Two hours

What we love:

  • Compact and easy to operate
  • Large LCD screen making it easy to read data
  • One button operation for power and calibration
  • The battery is removable, so you can insert one of higher quality

We don’t like this as much:

  • The battery only gives two hours of continuous monitoring
  • The temperature is set to Celsius and can’t be changed to Fahrenheit
Sale
Stellate Smart Indoor Air Quality Monitor Detector Sensor - HCHO/Formaldehyde, TVOC/Organic Particulate Matter, AQI/Air Quality Index Pollution, Temperature & Humidity, Portable for Home, Office
  • 💧MULTIFUNCTIONAL AIR QUALITY METER: This device will detect not only levels of formaldehyde HCHO, but also VOC dust, atmospheric pressure, humidity, temperature (Celsius), PMs through laser scattering & more.
  • 💧ADVANCED SENSORS: Air Quality Tester monitor incorporates a laser sensor to measure levels of dust particles and has a second electrochemical semiconductor sensor to measure formaldehyde and synthetic organic compound levels.
  • 💧BREATHE EASY: TVOCs come from paint, smoke, glues & more. PMs include haze and household dust. The air quality monitor pm2.5 will alert you if the air quality in your kitchen, living room or bedroom reaches harmful levels.
  • 💧HEALTHY INDOOR CLIMATE: Air Pollution detector indicates the air quality and sources of toxic fumes in your household. Be positive that your air is safe & clean with this simple in use Air Monitor Quality detector.
  • 💧PORTABLE & EASY TO USE: The small size allows you to take it anywhere, including a hotel room. It charges through an integrated USB port and if you have a question, our professional staff is available to assist you.

5. uHoo Indoor Air Quality Sensor

uHoo Indoor Air Quality Sensor – 9 in 1 Smart Air Monitor with Temperature and Humidity Gauge, CO2, Dust (PM2.5), VOC, NO2, Allergen Meter -to Breathe Easy and Boost Health with App

If you want the ultimate in air quality monitors, then the uHoo 9 in 1 Smart Air Monitor might be the one for you. It features nine sensors that provide a comprehensive analysis of the air quality in your room.

Slightly larger than a coffee mug, this sensor blends seamlessly into your décor. It is powered via a 5V DC power adapter and micro USB port, so it is not as portable as some other monitors. It does have Smart Home compatibility with Amazon Alexa, Google Assistant, Nest, and others, and by installing their “uHoo” app on your Smartphone, the information is fed to your phone at a consistent rate. Each sensor is listed in the app and the readings are updated and stored in real-time within the app to give the user a record of historical data.

Number of Sensors: Nine – Temperature, Humidity, Carbon Monoxide, Carbon Dioxide, Volatile Organic Compounds (VOCs), Dust (Particulate Matter 2.5 / PM2.5), Nitrogen Dioxide, Ozone, and Air pressure

Battery life: Two hours

What we love:

  • The uHoo app can send alerts when readings exceed set thresholds
  • The sensor readings are color-coded
  • The white, sleek design means you can place it anywhere in your home
  • Once it is connected and set up, it runs 24/7 without intervention

We don’t like this as much:

  • There is no display of air quality on the unit, only in the app
  • It only connects to a 2.4Ghz Wi-Fi network
Sale
uHoo Indoor Air Quality Sensor – 9 in 1 Smart Air Monitor with Temperature and Humidity Gauge, CO2, Dust (PM2.5), VOC, NO2, Allergen Meter -to Breathe Easy and Boost Health with App
  • THE WORLD’S MOST ADVANCED AIR MONITOR - Win the invisible war against pollutants floating around your home or office space. Only uHoo’s air quality monitor provides a fully comprehensive analysis of the air quality in your space by measuring indoor temperature, humidity, dust, toxins, nitrogen dioxide, carbon dioxide, ozone, air pressure, and more.
  • RECLAIM YOUR PERSONAL SPACE - Don’t take asthma and allergies for granted. These conditions are most likely caused by invisible irritants and pollutants in your personal space that uHoo’s advanced air monitor can detect. Results are displayed real time on the mobile app with suggestions on how to drastically improve your overall mood at home.
  • KNOWING IS HALF THE BATTLE - Monitor air quality even when miles away. uHoo syncs with other IFTTT-compatible devices such as Nest, Roomba, Amazon Alexa, Google Assistant, among others. With uHoo as the brain that handles air quality, it can perform tasks such as scheduled cleanings and 24/7 climate control for the smart home.
  • SEAMLESS CONNECTION - With uHoo, advanced technology is simpler than ever. Out of the box, simply plug in the device, connect to the WiFi network, and immediately receive round-the- clock feedback through 9 precisely calibrated sensors displayed on the mobile app. The uHoo companion app is compatible with iOS 11.0 and Android 4.2 and up.

6. Eve Room – Apple HomeKit Smart Home Indoor Air Quality Monitor

Eve Room - Apple HomeKit Smart Home Indoor Air Quality Monitor for Tracking VOC, Temperature, & Humidity

The Eve Room, an Apple Homekit-enabled indoor air quality monitor, will show you the air quality of any room via its high-contrast e-ink display. Equipped with all-new precision sensor technology, it measures 0.59 x 2.13 x 2.13 inches, weighs only 1.76 ounces, and is powered by a lithium battery which is rechargeable using the included micro USB cable.

The Eve Room monitor connects to a HomeKit setup with Bluetooth and not Wi-Fi, so you don’t need a network connection or hub to see the room temperature. The unit displays the air quality with stars, but the app shows precise sensor readings in ppb (parts per billion). The Eve Room can store the readings over time, so weeks or even months down the road, you can open the app and look back to see the overall air quality trends.

Number of Sensors: Three – Temperature, Humidity, and VOCs

Battery life: Six+ weeks

What we love:

  • Being able to export the data to a spreadsheet for analysis
  • Easy to set up and connect to Apple Homekit
  • The e-paper display doesn’t deplete the battery power
  • Data is stored even if you are away for an extended period

We don’t like this as much:

  • The app must be used to change the temperature from °C to °F
  • It doesn’t detect allergens
Eve Room - Apple HomeKit Smart Home Indoor Air Quality Monitor for Tracking VOC, Temperature, & Humidity
  • Detect harmful Volatile Organic Compound (VOC) levels caused by common home items such as furniture, paint, electronics, toys, and thousands more
  • Learn how activities like cooking and cleaning pollute your home and know when to ventilate your child's room, sleeping spaces, living room, or kitchen
  • See air quality, temperature, and humidity clearly with the high-contrast e-ink display, or more detailed in the Eve app (historical data by hours, days weeks, months, and years) or ask Siri
  • Apple HomeKit-enabled: Unparalleled ease of use and advanced security; get up and running in a flash with quick & easy set up and no need for a bridge or gateway; enjoy the highest data privacy – no Eve cloud, no registration, no profiling
  • Enjoy 6+ weeks of wireless use on a single charge via Micro USB

7. IQAir AirVisual Pro 

IQAir [AirVisual Pro Air Quality Monitor] Compare Indoor & Outdoor Air Quality [PM2.5, CO2, AQI, Temperature, Humidity] Real-Time Air Quality & Forecasting, Historic Data, IFTTT

The AirVisual Pro air quality monitor from IQAir is a professional-grade indoor and outdoor air quality monitor. It uses the latest laser technology and industrial-grade sensors to produce the most accurate data available. The easy-to-read 5” LED display shows real-time air quality measurements, plus temperature and humidity. Measuring 3.2 x 7.2 x 3.9 inches and weighing 1.5lbs., this monitor can either be plugged into a wall socket via the USB port for continuous monitoring or can operate using the rechargeable lithium-ion battery.

The IQAir AirVisual Pro also has excellent connectivity and smart-home integration, with IFTTT (If This, Then That) allowing you to control smart devices via Wi-Fi. The AirVisual App gives you the ability to receive alerts if thresholds are exceeded.

Number of Sensors: Four – PM2.5, CO2, AQI, Temperature, and Humidity

Battery life: 3.5 hours

What we love:

  • It will send alerts and make recommendations based on lifestyle preferences
  • You can add your town and see the air quality both indoors and outdoors
  • Laser technology and AI delivers precise results in real-time
  • It has a bright, attractive, and easy to read display

We don’t like this as much:

  • No smart device connectivity 
  • It’s not wall-mountable
IQAir [AirVisual Pro Air Quality Monitor] Compare Indoor & Outdoor Air Quality [PM2.5, CO2, AQI, Temperature, Humidity] Real-Time Air Quality & Forecasting, Historic Data, IFTTT
  • Professional grade, highly accurate indoor/outdoor air quality monitoring system
  • Displays real-time outdoor air quality readings plus indoor temp & humidity
  • IFTTT (If This, Then That): Set your AirVisual Pro to act, based on certain parameters. For example, if your AirVisual Pro has a high CO2 reading, then you get an alert.
  • High precision laser technology for PM2.5 sensor, industrial grade CO2 sensor
  • Connects to WiFi: view your readings via mobile app or desktop

8. Airthings – 2930 Wave Plus 

Airthings - 2930 Wave Plus - Radon & Air Quality Monitor (VOC, Humidity, Temp, CO2, Pressure)

This award-winning air quality monitor from Airthings has six powerful sensors that detect key indoor air quality factors. Powered by two AA batteries, it is designed to be wall-mounted in the area where you spend most of your time. Setup is simple and the Airthings app communicates with your smartphone via Bluetooth. It also integrates with Amazon Alexa, Google Assistant and you can use your voice to control the device.

Operating the unit couldn’t be easier. To see the air quality at a glance, simply wave your hand in front of the unit and a color-coded ring will give you the result. All sensors take readings every five minutes, except the radon sensor which is every hour. The app gives more detailed information on the various sensor readings which can be stored online.

Number of Sensors: Six – Carbon monoxide, TVOCs, Temperature, Humidity, Air Pressure, and Radon

Battery life: 14 months

What we love:

  • Touchless activation. Just wave at it and the AQI ring shows the air quality
  • Bluetooth connection has a range of up to 15ft
  • Measurements are stored on the device for 80 days and up to one year online
  • Having a radon sensor plus the other five means complete protection

We don’t like this as much:

  • The device needs at least seven days to fully calibrate
  • Changing batteries results in a data gap of about one hour
Sale
Airthings - 2930 Wave Plus - Radon & Air Quality Monitor (VOC, Humidity, Temp, CO2, Pressure)
  • AWARD-WINNING: Wave Plus is an award-winning smart indoor air quality monitor with radon detection. (Time magazine's Best Inventions 2019; CES Innovation Award - Honouree 2019)
  • RELIABLE RADON RESULTS: As radon levels fluctuate daily, continuous long-term measuring is necessary. Airthings Wave Plus measures radon accurately and reliably
  • CLEAN AIR SENSORS: Radon, Carbon Dioxide (CO2), toxins and chemicals (Total VOCs), humidity, temperature and air pressure sensors allow you to gain full visibility into six key indoor air factors
  • EASY AND CLEAR RESULTS: Connect via Bluetooth to the Airthings App or log in to the Airthings Dashboard online for detailed insights into your air
  • POLLEN LEVELS : Live and local pollen data right in your Airthings App

FAQs about Air Quality Monitors:

How do Air Quality Monitors work?

An air quality monitor comes equipped with sensors or meters that assess oxygen, CO2, and other volatile gasses. These are drawn into the unit by a fan or through other mechanical means. Depending on the sensors the monitor has, it will analyze the levels of each type of particulate and display the results.

Why would you need an Air Quality Monitor in your home?

For anyone concerned about air pollution, suffers from allergies, has existing breathing problems, or has an underlying health condition, an air quality monitor will be especially beneficial in establishing if it is safe to spend time in the room or not, and if an air purifier is needed.

What kind of air pollutants can be measured with an air quality monitor?

Pollutants that an air quality monitor can detect include radon, secondhand smoke, carbon monoxide, volatile organic compounds (VOCs), carbon dioxide, toxins and chemicals (total VOCs), mold, dust (Particulate Matter 2.5 / PM2.5), nitrogen dioxide, and ozone.

Which Air Quality Monitor is Best for You?

We recommend that you choose an air quality monitor that gives you a concise, clear reading of the environment in your home. A good quality monitor can measure particulates (PM2.5) and TVOCs, which are important measurements that go a long way to help you understand how healthy your home is. Additional readings for temperature, humidity, CO2, and air pressure are also helpful for you to know. At the end of the day, you also want a device that will blend into your home and is easy to read.

Last update on 2021-06-18 / Affiliate links / Images from Amazon Product Advertising API