AQI Forecast by County
Wednesday, February 24
Wed Thu
Placer
29
42
Sacramento
29
42
Yolo-Solano
21
33

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 92 36 78 86 77
Good 59 143 93 72 88

Preliminary data, subject to revision or deletion.

View 2002-2007 historical air quality