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AQI Forecast by County
Wednesday, August 16
Wed Thu
El Dorado
77
100
Placer
84
100
Sacramento
67
100
Yolo-Solano
49
58

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 30 1 9 19 23
Moderate 45 34 52 51 48
Good 29 71 43 35 34

Preliminary data, subject to revision or deletion.

View 2002-2007 historical air quality