Do You Know Current Air Pollution Levels?
Check air quality conditions before you go outside to help protect your health. Exposure to high air pollution levels can cause immediate and severe health issues including respiratory illness, heart and lung stress, and damaged respiratory cells. Some individuals are more vulnerable to the health impacts of air pollution, including children, pregnant women, the elderly, and individuals with heart or lung conditions, such as asthma.

Mark your calendar for May 1, when the Sacramento region's Spare The Air Program will begin. From May 1 to October 31 each year, when the AQI is forecast to reach 126 or higher for ground-level ozone a Spare The Air alert is issued. On Spare The Air days, residents are asked to reduce their driving.

Sacramento Region Ozone Air Quality Forecast updated by noon
Today (Fri, June 20)
48 AQI - Good
Tomorrow (Sat, June 21)
45 AQI - Good

Yesterday's High Extended AQI Outlook
Thu, June 19
84 AQI - Moderate
Ozone
Sun, June 22
Moderate
Mon, June 23
Moderate
Tue, June 24
Moderate

Air Quality Forecast and Weather Discussion
Friday, a trough of low pressure aloft will improve atmospheric mixing across northern California. In addition, ozone formation will decrease as temperatures cool into the low-80s in the Sacramento region. Furthermore, moderate southerly to southwesterly winds will promote dispersion, resulting in Good ozone levels. Saturday, as surface high pressure builds over the Pacific Northwest, moderate northwesterly winds will aid dispersion in the Sacramento Valley. In addition, the trough of low pressure aloft will keep mild temperatures over the region, limiting ozone development. Therefore, ozone levels will remain Good. Sunday, northwesterly winds and dispersion will decrease as the surface ridge weakens to the north. In addition, sunny skies and high temperatures climbing back into the upper-80s will enhance ozone formation, leading to low-Moderate ozone levels.