AQI Forecast by County
Wednesday, August 16
Wed Thu
El Dorado

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

Reduce Driving to Reduce Air Pollution
When you hear a Spare The Air alert this summer, reduce your driving and reduce pollution. Your efforts will help improve air quality for those most susceptible to the health effects of air pollution, including children and the elderly.

Would you care to Spare The Air?

Download the free Sacramento Region Air Quality app to get current conditions at air monitoring sites, the daily AQI forecast, Spare The Air alerts and wildfire smoke advisories. The app is available in iOS, Google Play and Windows app stores.

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, Aug 16)
84 AQI - Moderate
Tomorrow (Thu, Aug 17)
100 AQI - Moderate

Yesterday's High Extended AQI Outlook
Tue, Aug 15
61 AQI - Moderate
Fri, Aug 18
Unhealthy for Sensitive Groups
Sat, Aug 19
Unhealthy for Sensitive Groups
Sun, Aug 20

Air Quality Forecast and Weather Discussion
Wednesday, a weak upper-level trough of low pressure will enhance atmospheric mixing over California. However, sunny skies and warming temperatures will aid ozone formation in the Sacramento region, leading to Moderate ozone levels. Thursday and Friday, an upper-level ridge of high pressure will build over northern California, reducing mixing and producing sunny skies and temperatures in the low- to mid-90s. These conditions will enhance ground-level ozone formation. Therefore, despite light to moderate onshore winds dispersing pollutants each afternoon, ozone levels will be high-Moderate on Thursday and Unhealthy for Sensitive Groups on Friday.