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
Sunday, September 21 at 9:49 AM
5 County Map
Sun
Mon
Tue
Wed
Thu
Northern
Zone
61
42
G
G
G
PM2.5
PM2.5
PM2.5
OZONE
OZONE
Coast and Central Bay
55
38
G
G
G
PM2.5
PM2.5
PM2.5
OZONE
OZONE
Eastern
Zone
53
38
G
G
G
PM2.5
OZONE
OZONE
OZONE
OZONE
South Central Bay
51
38
G
G
G
PM2.5
PM2.5
PM2.5
OZONE
OZONE
Santa Clara Valley
46
35
G
G
G
PM2.5
OZONE
OZONE
OZONE
OZONE

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