The Best Air Quality Monitor for Outdoors and Indoors in 2026
This article reviews various air quality monitors for indoor and outdoor use, highlighting the IQAir Air Visual Pro as a top pick. It details how these devices measure pollutants like PM2.5, CO2, and VOCs to help users maintain a healthier living environment.
Why it matters
As environmental awareness grows, consumer-grade air quality monitoring provides actionable data for personal health management.
These air quality monitors test the air quality both indoors and outdoors, and on top of measuring PM2.5 (particulate matter) in the air and AQI (air quality index), they can also give insights into the air you're breathing, including measuring temperature, humidity, CO2, VOCs, and more.
Our top pick, IQAir's Air Visual Pro ($330), measures for several factors and has an easy-to-read display, while our more basic budget pick, Temptop S1 PM2.5 Air Quality Monitor & Indoor Thermometer ($28), has been solid throughout prolonged testing.
For more ways to keep your air quality in check for a healthier environment, take a look at our guides to the Best Outdoor Air Quality Monitors, Best Air Purifiers, and Best Multiuse Air Purifiers. Plus, check out how we test them and how to pick the right air purifier for your home.
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