AQI Forecast by County
Tuesday, February 18
Tue Wed
Placer
42
55
Sacramento
42
57
Yolo-Solano
33
46

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
140
Ozone
Fri. 8/16
97
Ozone
Sat. 7/27
140
Ozone
Fri. 8/16
136
Ozone
Fri. 8/16
122
Ozone
Tue. 8/27
VeryUnhealthy 0 0 0 0 0
Unhealthy 0 0 0 0 0
UnhealthySG 15 0 6 8 6
Moderate 83 43 61 81 69
Good 86 141 117 95 103

Preliminary data, subject to revision or deletion.

View 2002-2007 historical air quality