AQI Forecast by County
Thursday, August 05
Thu Fri
El Dorado

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, Aug 5)
77 AQI - Moderate
Tomorrow (Fri, Aug 6)
122 AQI - Unhealthy for Sensitive Groups

Yesterday's High Extended AQI Outlook
Wed, Aug 4
97 AQI - Moderate
Sat, Aug 7
Unhealthy for Sensitive Groups
Sun, Aug 8
Mon, Aug 9

Air Quality Forecast and Weather Discussion
Thursday, a trough of low pressure aloft will aid atmospheric mixing over northern California, and moderate onshore winds will disperse pollutants. However, sunny skies and high temperatures in the upper-80s will lead to Moderate ozone levels in the foothills, while lower elevations should remain in the high-Good category. Friday, light northwesterly winds will transport a significant plume of smoke from wildfires in northwestern California into the Sacramento Valley. This smoke will increase particle levels and enhance ozone formation. In addition, mostly sunny skies and temperatures near 100F will support ozone production. These conditions will lead to Unhealthy for Sensitive Groups AQI levels for both ozone and particles. Saturday, winds will shift to southwesterly, gradually dispersing smoke. However, lingering smoke will continue to impact the region, keeping particle and ozone levels elevated. Furthermore, mostly sunny and warm conditions will continue to aid ozone development. As a result, ozone levels will be Unhealthy for Sensitive Groups, and particle levels will be high-Moderate.