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AQI Forecast by County
Friday, September 17
Fri Sat
El Dorado
87
50
Placer
90
49
Sacramento
71
44
Yolo-Solano
50
31

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 4 0 3 3 2
UnhealthySG 37 3 24 30 13
Moderate 64 30 48 70 70
Good 32 104 62 34 52

Preliminary data, subject to revision or deletion.

View 2002-2007 historical air quality