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AQI Forecast by County
Wednesday, October 23
Wed Thu
El Dorado
50
46
Placer
50
46
Sacramento
50
45
Yolo-Solano
44
42

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
140
Ozone
Fri. 8/16
97
Ozone
Sat. 7/27
140
Ozone
Fri. 8/16
136
Ozone
Fri. 8/16
122
Ozone
Tue. 8/27
VeryUnhealthy 0 0 0 0 0
Unhealthy 0 0 0 0 0
UnhealthySG 15 0 6 8 6
Moderate 82 43 61 81 68
Good 77 131 107 85 98

Preliminary data, subject to revision or deletion.

View 2002-2007 historical air quality