tips

AQI Forecast by County
Saturday, December 03
Sat Sun
Placer
42
21
Sacramento
55
29
Yolo-Solano
53
21

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


Forecast will be issued daily by noon (PST)

A "!" next to a forecast means a Spare The Air Day has been declared for that day.
 
Forecast: AQI   Pollutant
Sat. December 03, 2022:
 55 
PM2.5    
Sun. December 04, 2022:
 29 
PM2.5    
 
Extended Forecast: Condition Pollutant
Mon. December 05, 2022:
Good  Good
PM2.5    
Tue. December 06, 2022:
Moderate  Moderate
PM2.5    
Wed. December 07, 2022:
Moderate  Moderate
PM2.5    
Thu. December 08, 2022:   PM2.5    
 
Actual: AQI   Pollutant
Fri. December 02, 2022:
 30 
PM2.5    

Weather Conditions:
Friday, surface high pressure will briefly develop over northern California, with calm to light northwesterly winds limiting dispersion. Furthermore, cool temperatures in the evening hours will generate an inversion, trapping pollutants near the ground. However, low pollutant carryover from the previous day will yield low-Moderate particle levels. Saturday, a low pressure system will approach northern California, producing rain showers and enhancing mixing. However, light winds will hinder dispersion, keeping particle levels low-Moderate. Sunday, as the surface low remains over the region, strengthening southerly to southwesterly winds will disperse pollutants, leading to Good particle levels.