AQI Forecast by County
Wednesday, December 01
Wed Thu

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 PM2.5 Air Quality Forecast updated by noon
Today (Wed, Dec 1)
97 AQI - Moderate
Tomorrow (Thu, Dec 2)
93 AQI - Moderate

Yesterday's High Extended AQI Outlook
Tue, Nov 30
74 AQI - Moderate
Fri, Dec 3
Sat, Dec 4
Sun, Dec 5

Air Quality Forecast and Weather Discussion
Tuesday and Wednesday, a ridge of high pressure over northern California will limit atmospheric mixing. In addition, strong temperature inversions during the morning and evening hours will trap pollutants near the ground. Furthermore, light and variable winds will limit dispersion, and overnight fog and mist will enhance particle production. These conditions will result in high-Moderate particle levels on both days. Thursday, the upper-level ridge will weaken slightly, increasing atmospheric mixing. However, calm winds will continue to allow pollutants to accumulate in the Sacramento region. These conditions, combined with pollutant carryover from previous days, will keep particle levels high-Moderate.