AQI Forecast By County
Sunday, February 26
Sun Mon
Placer
42
57
Sacramento
57
80
Yolo-Solano
42
59

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
185
Ozone
Thu. 7/28
115
Ozone
Wed. 7/27
172
Ozone
Thu. 7/14
185
Ozone
Thu. 7/28
174
Ozone
Wed. 7/27
VeryUnhealthy 0 0 0 0 0
Unhealthy 15 0 6 5 12
UnhealthySG 34 4 27 29 27
Moderate 70 42 56 71 71
Good 65 138 95 79 74

Preliminary data, subject to revision or deletion.

View 2002-2007 historical air quality