Top-Rated Air Quality Monitors for Home and Outdoor Use

Wired tested multiple indoor and outdoor air quality monitors to help users track pollutants like PM2.5, AQI, temperature, humidity, and CO2 levels. The IQAir AirVisual Pro is the top pick for its clear display and comprehensive measurements, while the Temtop S1 offers a budget-friendly alternative. These devices are increasingly important as wildfire smoke and other climate-related pollutants threaten air safety.
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The IQAir AirVisual Pro, priced at $330, stands out for its 5-inch LCD screen that uses a visual indicator—a boy's face that changes expression and color based on air quality—allowing users to check conditions from across a room without opening an app. It tracks PM2.5, CO2, temperature, and humidity while also displaying outdoor readings.
For budget-conscious buyers, the Temtop S1 costs just $28 and has proven reliable during extended testing. The PurpleAir Zen, at $299, offers dual indoor-outdoor functionality, withstand