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 23 at 11:32 AM
5 County Map
Sun
Mon
Tue
Wed
Thu
North Counties
55
53
M
M
M
PM2.5
PM2.5
OZONE
OZONE
OZONE
Coast and Central Bay
55
59
M
M
M
PM2.5
PM2.5
PM2.5
PM2.5
PM2.5
Eastern District
58
77
M
M
M
OZONE
OZONE
OZONE
OZONE
OZONE
South Central Bay
50
55
M
M
M
PM2.5
PM2.5
PM2.5
OZONE
OZONE
Santa Clara Valley
54
90
M
M
M
OZONE
OZONE
OZONE
OZONE
OZONE

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