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AQI Forecast by County
Thursday, July 18
Thu Fri
El Dorado
51
49
Placer
51
50
Sacramento
50
48
Yolo-Solano
44
42

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
129
Ozone
Wed. 6/19
90
Ozone
Tue. 6/11
122
Ozone
Wed. 6/12
129
Ozone
Wed. 6/19
105
Ozone
Wed. 6/19
VeryUnhealthy 0 0 0 0 0
Unhealthy 0 0 0 0 0
UnhealthySG 4 0 3 1 1
Moderate 36 16 29 35 27
Good 37 61 45 41 49

Preliminary data, subject to revision or deletion.

View 2002-2007 historical air quality