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

AQI Forecast By County
Tuesday, June 30
Tue Wed
El Dorado
129
129
Placer
129
129
Sacramento
129
129
Yolo-Solano
101
93


Forecast will be issued daily by noon (PDT)

A "!" next to a forecast means a Spare The Air Day has been declared for that day.
 
Forecast: AQI   Pollutant
Tue. June 30, 2015:
 129 
Ozone   !   
Wed. July 01, 2015:
 129 
Ozone   !   
 
Extended Forecast: Condition Pollutant
Thu. July 02, 2015:
Moderate  Moderate
Ozone    
Fri. July 03, 2015:
Moderate  Moderate
Ozone    
Sat. July 04, 2015:
Moderate  Moderate
Ozone    
Sun. July 05, 2015:
Moderate  Moderate
Ozone    
 
Actual: AQI   Pollutant
Mon. June 29, 2015:
 43 
Ozone    

Weather Conditions:
Tuesday and Wednesday are Spare The Air Days in the Sacramento region. An upper-level ridge of high pressure over northern California will limit atmospheric mixing and produce sunny skies and hot temperatures, enhancing the formation of ground-level ozone. Furthermore, light southwesterly winds will limit pollutant dispersion. As a result, ozone levels will be Unhealthy for Sensitive Groups on both days. Thursday, sunny and hot conditions will continue to enhance ozone formation in the Sacramento region. However, increasing onshore winds will help to disperse pollutants, resulting in high-Moderate ozone levels.