An official website of the United States government.

Air Data: Air Quality Data Collected at Outdoor Monitors Across the US

Use the tools on this site to access recent and historical data.

For current air quality, visit AirNow.gov

During fire events, use the Fire and Smoke map.

Air Data: Air Quality Data Collected at Outdoor Monitors Across the US

This website provides access to outdoor air quality data collected from state, local and tribal monitoring agencies across the United States.