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
Tuesday, August 22 at 9:34 AM
5 County Map
Tue
Wed
Thu
Fri
Sat
North Counties
55
57
M
M
M
PM2.5
PM2.5
PM2.5
PM2.5
PM2.5
Coast and Central Bay
57
57
M
M
M
PM2.5
PM2.5
PM2.5
PM2.5
PM2.5
Eastern District
55
55
M
M
M
PM2.5
PM2.5
PM2.5
OZONE
OZONE
South Central Bay
53
50
G
G
M
PM2.5
PM2.5
PM2.5
PM2.5
PM2.5
Santa Clara Valley
55
55
G
M
M
PM2.5
PM2.5
PM2.5
OZONE
OZONE

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