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AQI Forecast by County
Monday, May 16
Mon Tue
El Dorado
51
71
Placer
51
74
Sacramento
46
67
Yolo-Solano
40
49

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 (Mon, May 16)
51 AQI - Moderate
Tomorrow (Tue, May 17)
74 AQI - Moderate

Yesterday's High Extended AQI Outlook
Sun, May 15
37 AQI - Good
Ozone
Wed, May 18
Moderate
Thu, May 19
Good
Fri, May 20
Good

Air Quality Forecast and Weather Discussion
Monday, as a weak upper-level trough of low pressure moves into northern California, increasing onshore winds will aid dispersion. However, warm temperatures and mostly sunny skies will support ozone formation in the foothills. Therefore, ozone levels will be low-Moderate. Tuesday, a weak ridge of high pressure will build over the Sacramento region, reducing mixing and producing sunny skies and warmer temperatures. In addition, lighter west-northwesterly winds will limit pollutant dispersion. These conditions will enhance ground-level ozone formation, leading to Moderate ozone levels. Wednesday, sunny skies and temperatures in the mid-90s will increase ozone production. However, northwesterly winds will strengthen in the afternoon, dispersing pollutants and leading to low-Moderate ozone levels.