National Maps

Current Air Quality

Current Air Quality Forecast 

 

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Today's Air Quality Forecast

Today's Air Quality Forecast 

 

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Air Quality Index Scale

 
0 - 50
Good
51 - 100
Moderate
101 - 150
Unhealthy for Sensitive Groups (USG)
151 - 200
Unhealthy
201 - 300
Very Unhealthy
301 - 500
Hazardous
 

Values above 500 are beyond the AQI scale

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.

 

 
 
 
 
 
 
 
 
 
 

 

 

 

Air Quality Index Scale

 
0 - 50
Good
51 - 100
Moderate
101 - 150
Unhealthy for Sensitive Groups (USG)
151 - 200
Unhealthy
201 - 300
Very Unhealthy
301 - 500
Hazardous
 

Values above 500 are beyond the AQI scale