AirNow is your one-stop source for air quality data. This site highlights air quality by zip code, while still providing air quality information at state, national, and world views.

Ground-level ozone is one of our nation’s most common air pollutants. Use the chart found in the link below to help reduce your exposure and protect your health.

For detailed information on each level of air quality, including what to do when the AQI reaches hazardous levels, please visit airnow.gov.