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AQI Forecast by County
Saturday, August 17
Sat Sun
El Dorado
54
49
Placer
58
50
Sacramento
51
48
Yolo-Solano
46
44

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
108
Ozone
Tue. 8/6
VeryUnhealthy 0 0 0 0 0
Unhealthy 0 0 0 0 0
UnhealthySG 11 0 6 6 3
Moderate 54 28 43 54 45
Good 43 79 59 48 60

Preliminary data, subject to revision or deletion.

View 2002-2007 historical air quality