AQI Forecast by County
Tuesday, November 20
Tue Wed
Placer
161
99
Sacramento
164
112
Yolo-Solano
153
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
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 10 0 2 7 9
UnhealthySG 40 2 17 32 25
Moderate 73 49 71 73 80
Good 58 132 94 69 69

Preliminary data, subject to revision or deletion.

View 2002-2007 historical air quality