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AQI Forecast by County
Tuesday, October 23
Tue Wed
El Dorado
54
61
Placer
58
67
Sacramento
50
61
Yolo-Solano
48
50

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
210
Ozone
Thu. 8/2
147
Ozone
Thu. 8/9
182
Ozone
Thu. 8/9
210
Ozone
Thu. 8/2
204
Ozone
Thu. 8/2
VeryUnhealthy 3 0 0 3 1
Unhealthy 10 0 2 7 9
UnhealthySG 40 2 17 32 25
Moderate 69 49 69 71 76
Good 52 122 86 61 63

Preliminary data, subject to revision or deletion.

View 2002-2007 historical air quality