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AQI Forecast by County
Thursday, June 04
Thu Fri
El Dorado
100
51
Placer
105
51
Sacramento
105
50
Yolo-Solano
80
44

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 (Thu, June 4)
105 AQI - Unhealthy for Sensitive Groups
Tomorrow (Fri, June 5)
51 AQI - Moderate

Yesterday's High Extended AQI Outlook
Wed, June 3
97 AQI - Moderate
Ozone
Sat, June 6
Good
Sun, June 7
Good
Mon, June 8
Good

Air Quality Forecast and Weather Discussion
Thursday, temperatures above 100F and sunny skies will support ozone production in the Sacramento region. Furthermore, light onshore winds during the late afternoon and evening hours will hinder mixing and dispersion. In addition, lingering smoke from a fire in Suisun City will increase particle levels and enhance ozone formation. Thus, ozone levels will be Unhealthy for Sensitive Groups. Friday and Saturday, an upper-level trough of low pressure moving into California will aid vertical mixing and generate stronger onshore winds, increasing pollutant dispersion. Furthermore, cooler temperatures will decrease ozone development. Therefore, ozone levels will be low-Moderate on Friday and Good on Saturday.