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AQI Forecast by County
Tuesday, August 22
Tue Wed
El Dorado
51
61
Placer
61
64
Sacramento
51
58
Yolo-Solano
46
50

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
164
Ozone
Tue. 6/20
112
Ozone
Tue. 6/20
164
Ozone
Tue. 6/20
156
Ozone
Tue. 6/20
154
Ozone
Tue. 8/1
VeryUnhealthy 0 0 0 0 0
Unhealthy 2 0 2 1 1
UnhealthySG 33 1 9 22 25
Moderate 48 36 56 54 51
Good 29 75 45 35 35

Preliminary data, subject to revision or deletion.

View 2002-2007 historical air quality