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AQI Forecast by County
Thursday, May 24
Thu Fri
El Dorado
43
37
Placer
45
37
Sacramento
41
38
Yolo-Solano
37
33

Air Quality Map
The map below is a 1-hour snapshot. Click to view all hours recorded since midnight.
Current map


Know What You're Breathing
It's almost summer and that means our region will soon be having higher levels of smog, known as ground-level ozone.

The Sacramento region's Spare The Air season is underway. You're urged to pay attention to the daily air quality forecast and be ready to drive less when a Spare The Air alert is issued. Clean air is up to us!

A Spare The Air alert in the Sacramento region will be issued when the AQI for ground-level ozone pollution is forecast to reach 126 or above.

Sacramento Region Ozone Air Quality Forecast updated by noon
Today (Thu, May 24)
45 AQI - Good
Tomorrow (Fri, May 25)
38 AQI - Good

Yesterday's High Extended AQI Outlook
Wed, May 23
48 AQI - Good
Ozone
Sat, May 26
Moderate
Sun, May 27
Moderate
Mon, May 28
Moderate

Air Quality Forecast and Weather Discussion
Thursday, mostly sunny skies will aid ozone formation in the Sacramento region. However, moderate onshore winds will increase pollutant dispersion, yielding Good ozone levels. Friday, an upper-level trough of low pressure over northern California will enhance atmospheric mixing. In addition, increased cloud cover and cooler temperatures will reduce ozone formation. As a result, ozone levels will remain Good. Saturday, increasing sunshine and warmer temperatures will enhance ozone, and lighter winds will reduce pollutant dispersion. However, pollutant carryover from the previous days will be low. These conditions will lead to low-Moderate ozone levels.