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AQI Forecast by County
Thursday, October 28
Thu Fri
El Dorado
46
53
Placer
46
61
Sacramento
53
66
Yolo-Solano
42
59

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
179
Ozone
Sat. 8/28
140
Ozone
Sat. 8/28
179
Ozone
Sat. 8/28
172
Ozone
Sun. 8/29
164
Ozone
Sun. 8/29
VeryUnhealthy 0 0 0 0 0
Unhealthy 5 0 3 4 2
UnhealthySG 41 3 29 31 14
Moderate 75 38 56 82 84
Good 57 137 90 61 78

Preliminary data, subject to revision or deletion.

View 2002-2007 historical air quality