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, July 22 at 10:54 AM
5 County Map
Tue
Wed
Thu
Fri
Sat
Northern
Zone
42
25
G
M
M
PM2.5
OZONE
PM2.5
PM2.5
PM2.5
Coast and Central Bay
46
25
M
M
M
PM2.5
OZONE
PM2.5
PM2.5
PM2.5
Eastern
Zone
33
29
G
G
M
OZONE
OZONE
OZONE
OZONE
OZONE
South Central Bay
31
23
G
G
G
OZONE
OZONE
OZONE
OZONE
OZONE
Santa Clara Valley
34
31
G
M
M
OZONE
OZONE
OZONE
OZONE
OZONE

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