Air Quality Information
for the Sacramento Region
Brought to you by the Sacramento Metropolitan, El Dorado,
Feather River, Placer and Yolo-Solano Air Districts
AQI Forecast by County
Thursday, January 20
| Thu | Fri | |
| Placer | 89 | 25 |
| Sacramento | 112 | 38 |
| Yolo-Solano | 78 | 29 |
Air Quality Map
The map below is a 1-hour snapshot. Click to view all hours recorded since midnight.
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 (Thu, Jan 20)
112 AQI - Unhealthy for Sensitive Groups
|
Tomorrow (Fri, Jan 21)
38 AQI - Good
|
|
 
|
|
| Yesterday's High | Extended AQI Outlook | ||
|---|---|---|---|
|
Wed, Jan 19
72 AQI - Moderate
PM2.5 |
Sat, Jan 22
Good
|
Sun, Jan 23
Moderate
|
Mon, Jan 24
Moderate
|
Air Quality Forecast and Weather Discussion
Wednesday and Thursday, upper-level high pressure off the northern California coast will hinder atmospheric mixing. Furthermore, temperature inversions in the evening and overnight hours will trap pollutants at the surface. In addition, areas of morning fog on Thursday will enhance particle production, and calm to light winds throughout much of the period will limit dispersion. These conditions, combined with pollutant carryover from day to day, will lead to Unhealthy for Sensitive Groups particle levels on both days. Friday, as an upper-level trough of low pressure passes east of the region, mixing will increase. At the surface, moderate and gusty north-northwesterly wind will develop, effectively dispersing pollutants. Thus, particle levels will be Good.