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AQI Forecast by County
Sunday, August 01
Sun Mon
El Dorado
64
101
Placer
67
101
Sacramento
54
100
Yolo-Solano
43
67

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
Thu. 7/8
87
Ozone
Fri. 6/18
164
Ozone
Thu. 7/8
140
Ozone
Fri. 7/23
133
Ozone
Fri. 7/23
VeryUnhealthy 0 0 0 0 0
Unhealthy 1 0 1 0 0
UnhealthySG 19 0 10 17 6
Moderate 42 11 32 44 40
Good 29 80 48 30 45

Preliminary data, subject to revision or deletion.

View 2002-2007 historical air quality