tips

AQI Forecast by County
Wednesday, June 19
Wed Thu
El Dorado
97
74
Placer
100
77
Sacramento
93
67
Yolo-Solano
67
50

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


Do You Know Current Air Pollution Levels?
Check air quality conditions before you go outside. Smog increases throughout the day and it will be the highest in late-afternoon or early evening.

Download the free Sacramento Region Air Quality app today. You'll get air pollution readings from monitors throughout the region, the daily forecast, plus Spare The Air alerts.

You may also visit this site's Current Conditions to see the latest hourly air pollution readings.

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 (Wed, June 19)
100 AQI - Moderate
Tomorrow (Thu, June 20)
77 AQI - Moderate

Yesterday's High Extended AQI Outlook
Tue, June 18
87 AQI - Moderate
Ozone
Fri, June 21
Good
Sat, June 22
Moderate
Sun, June 23
Moderate

Air Quality Forecast and Weather Discussion
Wednesday, an upper-level ridge of high pressure will begin to weaken, enhancing atmospheric mixing. Furthermore, moderate onshore winds in the afternoon will disperse pollutants. Therefore, despite temperatures near 90F and sunny skies, ozone levels will be high-Moderate in the Sacramento region. Thursday and Friday, an upper-level trough of low pressure will move south into northern California, increasing mixing and producing cooler temperatures. Furthermore, moderate onshore winds will shift to north-northwesterly, aiding pollutant dispersion. Therefore, ozone levels will be Moderate on Thursday, lowering to high-Good on Friday.