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AQI Forecast by County
Thursday, October 29
Thu Fri
El Dorado
50
51
Placer
61
53
Sacramento
68
59
Yolo-Solano
66
57

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
192
Ozone
Thu. 8/20
119
Ozone
Mon. 10/26
150
Ozone
Fri. 8/21
192
Ozone
Thu. 8/20
190
Ozone
Thu. 8/20
VeryUnhealthy 0 0 0 0 0
Unhealthy 4 0 0 3 4
UnhealthySG 29 5 13 23 13
Moderate 88 33 75 84 75
Good 59 142 92 70 86

Preliminary data, subject to revision or deletion.

View 2002-2007 historical air quality