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AQI Forecast by County
Thursday, October 19
Thu Fri
El Dorado
57
50
Placer
57
50
Sacramento
68
53
Yolo-Solano
78
55

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
129
Ozone
Sat. 9/2
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 46 3 16 32 30
Moderate 69 56 76 77 77
Good 54 111 76 60 63

Preliminary data, subject to revision or deletion.

View 2002-2007 historical air quality