AQI Forecast by County
Monday, December 11
Mon Tue
Placer
72
68
Sacramento
102
99
Yolo-Solano
80
76

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 .070 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
143
Ozone
Tue. 7/11
101
Ozone
Fri. 7/21
133
Ozone
Thu. 7/20
143
Ozone
Tue. 7/11
115
Ozone
Thu. 8/31
Hazardous 0 0 0 0 0
VeryUnhealthy 0 0 0 0 0
Unhealthy 0 0 0 0 0
UnhealthySG 11 1 9 8 5
Moderate 83 24 56 81 71
Good 82 148 111 87 94

Preliminary data, subject to revision or deletion.

View 2002-2007 historical air quality