tips

AQI Forecast by County
Wednesday, September 28
Wed Thu
El Dorado
49
46
Placer
50
47
Sacramento
47
48
Yolo-Solano
42
43

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




 

Hazardous
VeryUnhealthy
Unhealthy
UnhealthySG
Moderate
Good

Preliminary data, subject to revision or deletion.

View 2002-2007 historical air quality