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AQI Forecast by County
Wednesday, September 30
Wed Thu
El Dorado
77
74
Placer
102
102
Sacramento
105
102
Yolo-Solano
112
112

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
115
Ozone
Sat. 8/22
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 25 4 11 23 11
Moderate 77 23 66 73 67
Good 46 124 75 53 69

Preliminary data, subject to revision or deletion.

View 2002-2007 historical air quality