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
Thursday, September 21 at 9:35 AM
5 County Map
Thu
Fri
Sat
Sun
Mon
North Counties
33
42
G
M
M
OZONE
PM2.5
PM2.5
PM2.5
PM2.5
Coast and Central Bay
32
46
G
G
G
OZONE
PM2.5
PM2.5
PM2.5
PM2.5
Eastern District
36
42
G
G
G
OZONE
OZONE
OZONE
OZONE
OZONE
South Central Bay
33
37
G
G
G
OZONE
OZONE
OZONE
OZONE
OZONE
Santa Clara Valley
35
40
G
G
G
OZONE
OZONE
OZONE
OZONE
OZONE

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