Find the air-quality app that fits the decision
Choose by coverage and use case, not by a generic ranking. Every product below was checked against its provider’s official information on July 20, 2026.
3 verified options
U.S. Environmental Protection Agency
AirNow
Current and forecast AQI from the EPA, with saved places and a Fire and Smoke Map.
- Best for
- U.S. users who want a government source and wildfire context.
- Coverage
- Official monitor and forecast coverage centered on the United States, with map data across parts of North America.
- Government data
- Forecast
- Fire and smoke map
- Saved locations
- Real-time readings
IQAir
IQAir AirVisual
Real-time, historical, alert, health-guidance, and multi-day forecast features across a broad global network.
- Best for
- Travelers and households comparing multiple cities or countries.
- Coverage
- Global city coverage; the provider reports thousands of cities across more than 100 countries.
- Global coverage
- Forecast
- History
- Alerts
- Health guidance
- Real-time readings
PurpleAir
PurpleAir Map
A sensor-level map with real-time readings, history, conversions, and adjustable averaging periods.
- Best for
- People who need nearby sensor detail or want to inspect local variation.
- Coverage
- Where PurpleAir sensors are installed. This is an official Web/PWA map, not a native iOS or Android app.
- Hyperlocal sensors
- Real-time readings
- History
- Installable PWA
- Customizable map
This finder does not display prices. Product features and availability can change, so the provider page remains the final source of truth.