Weather Station

Air Quality Forecast

The Air Quality Forecast is made by 1:15 p.m. Monday - Friday, and weekends as needed. Find out how to read the forecast and learn about air quality.

PM: Particulate Matter

Ozone and Particulate Matter

Ozone and particulate matter (PM) are the Bay Area’s two major pollutants. Learn about their health effects and find out how often they exceed federal and state health-based standards in the Bay Area.

Wood Burning Information

Call 1-877-4NO-BURN for Winter Spare the Air Alert Status, wood burning information, or to make a wood smoke complaint.

Pollution Animations

These animated maps show how particulate pollution patterns in the Bay Area change over the course of a given day.

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