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
Boise, ID
160 
 
Fresno, CA
104 
 
Bakersfield, CA
100 
 
Cool, CA
84 
 
Placerville, CA
84 
 
Boise, ID
170 
 
Bakersfield, CA
119 
 
Visalia, CA
116 
 
Fresno, CA
106 
 
Hanford, CA
100 
 
Fires: Current Conditions
Click to see map

Announcements

Maintenance: 8:00 PM 10/15 - 9:00 AM 10/16 EDT.

10/1/15: EPA has updated the National Ambient Air Quality Standards for ozone and the Air Quality Index. Learn more