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AQI Forecast by County
Sunday, September 22
Sun Mon
El Dorado
61
48
Placer
58
48
Sacramento
51
48
Yolo-Solano
44
41

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 .075 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
140
Ozone
Fri. 8/16
97
Ozone
Sat. 7/27
140
Ozone
Fri. 8/16
136
Ozone
Fri. 8/16
122
Ozone
Tue. 8/27
VeryUnhealthy 0 0 0 0 0
Unhealthy 0 0 0 0 0
UnhealthySG 14 0 6 8 5
Moderate 72 38 55 70 60
Good 57 105 82 65 78

Preliminary data, subject to revision or deletion.

View 2002-2007 historical air quality