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AQI Forecast by County
Thursday, September 20
Thu Fri
El Dorado
80
100
Placer
77
100
Sacramento
71
84
Yolo-Solano
48
54

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 9 0 2 7 8
UnhealthySG 36 2 14 29 22
Moderate 57 42 59 61 65
Good 36 96 66 41 45

Preliminary data, subject to revision or deletion.

View 2002-2007 historical air quality