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AQI Forecast by County
Tuesday, July 16
Tue Wed
El Dorado
61
80
Placer
67
84
Sacramento
58
77
Yolo-Solano
44
49

Air Quality Map

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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 83 24 56 81 71
Good 82 148 111 87 94

Preliminary data, subject to revision or deletion.

View 2002-2007 historical air quality