AQI: Good (0 - 50) AQI: Moderate (51 - 100) AQI: Unhealthy for Sensitive Groups (101 - 150) AQI: Unhealthy (151 - 200) AQI: Very Unhealthy (201 - 300) AQI: Hazardous(301 - 500) Action DayAction Day
Highest 5: U.S. Air Quality Summary | Canada Air Quality
About the Highest 5
 
  • Today's Forecasts
  • Tomorrow's Forecasts
  • Current AQI
Fresno, CA
145 
 
Madera, CA
122 
 
Modesto, CA
119 
 
Bakersfield, CA
114 
 
Hanford, CA
111 
 
Wildfire Smoke Advisories and Forecasts
For more information

Announcements

8/19/14: New and Improved Air Quality Index Brochure (PDF)

6/2/14: Congratulations to the 2014 EnviroFlash Challenge Winners.

5/30/14: Check out AirNow's new Ozone Facts page.