Forecast By County
Saturday, November 01
Sat Sun
Placer
42
33
Sacramento
42
33
Yolo-Solano
42
33

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. November 01, 2014:
 42 
PM2.5    
Sun. November 02, 2014:
 33 
PM2.5    
 
Extended Forecast: Condition Pollutant
Mon. November 03, 2014:
Moderate  Moderate
PM2.5    
Tue. November 04, 2014:
Moderate  Moderate
PM2.5    
Wed. November 05, 2014:
Moderate  Moderate
PM2.5    
Thu. November 06, 2014:   PM2.5    
 
Actual: AQI   Pollutant
Fri. October 31, 2014:
 33 
PM2.5    

Weather Conditions:
Friday, a cold front moving through California will produce gusty southerly winds, cloudy skies, and rain showers in the Sacramento region. These conditions will inhibit ozone formation, resulting in Good ozone levels. Saturday, a strong upper-level low-pressure system over California will enhance atmospheric mixing in the Sacramento region, and moderate southerly winds will help to disperse pollutants. Therefore, particle levels will be Good. Sunday, as surface high pressure builds over the Pacific Northwest, gusty north-northwesterly winds will effectively disperse pollutants in the Sacramento region, resulting in Good particle levels.