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AQI Forecast by County
Sunday, September 24
Sun Mon
El Dorado
63
50
Placer
63
50
Sacramento
59
46
Yolo-Solano
59
42

Air Quality Map
The map below is a 1-hour snapshot. Click to view all hours recorded since midnight.
Current map


Air Quality This Year

Number of Days in Each AQI Category

AQI numbers calculated according to the latest federal ozone health standard of .070 parts per million averaged over 8 hours.
For pre-2008 values based on the prior National Ambient Air Quality Standard, click the link at the bottom of the page.
     Region    Yolo-Solano Sacramento Placer El Dorado
Maximum AQI
143
Ozone
Tue. 7/11
101
Ozone
Fri. 7/21
133
Ozone
Thu. 7/20
143
Ozone
Tue. 7/11
115
Ozone
Thu. 8/31
Hazardous 0 0 0 0 0
VeryUnhealthy 0 0 0 0 0
Unhealthy 0 0 0 0 0
UnhealthySG 11 1 9 8 5
Moderate 76 22 50 75 65
Good 50 111 78 54 61

Preliminary data, subject to revision or deletion.

View 2002-2007 historical air quality