National Maps

Current Air Quality

Current Air Quality Forecast 


More Current Map Options:

Today's Air Quality Forecast

Today's Air Quality Forecast 
  AQI Legend

Air Quality Index Scale

0 - 50
51 - 100
101 - 150
Unhealthy for Sensitive Groups (USG)
151 - 200
201 - 300
Very Unhealthy
301 +

Highest NowCast AQI Locations

The list below shows the areas with the highest NowCast AQI for the current hour. The AirNow system automatically generates this list every hour, based on the areas with the highest NowCast AQI for ozone or particle pollution. Because air quality can change during the day, the areas on this list may change throughout the day, too. Note: This list is not used for regulatory purposes, and it does not indicate an area’s status in meeting National Ambient Air Quality Standards.