Five Day

Forecast

The Air District issues a daily air quality forecast that predicts air pollution levels for the coming five-day period.  This forecast uses the U.S. EPA's Air Quality Index scale.

For forecasting purposes, cities in the Bay Area have been divided into five reporting zones. The cities within each reporting zone are listed here.

5 Day Forecast

Air Quality Forecast
Wednesday, January 16 at 12:19 PM
5 County Map
Wed
Thu
Fri
Sat
Sun
North Counties
33
33
G
M
G
PM2.5
PM2.5
PM2.5
PM2.5
PM2.5
Coast and Central Bay
29
29
M
M
G
PM2.5
PM2.5
PM2.5
PM2.5
PM2.5
Eastern District
29
29
G
G
G
PM2.5
PM2.5
PM2.5
PM2.5
PM2.5
South Central Bay
29
33
G
G
G
PM2.5
PM2.5
PM2.5
PM2.5
PM2.5
Santa Clara Valley
33
29
G
M
M
PM2.5
PM2.5
PM2.5
PM2.5
PM2.5

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