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
Saturday, September 20 at 11:41 AM
5 County Map
Sat
Sun
Mon
Tue
Wed
Northern
Zone
63
61
M
M
G
PM2.5
PM2.5
PM2.5
PM2.5
PM2.5
Coast and Central Bay
57
55
M
M
G
PM2.5
PM2.5
PM2.5
PM2.5
OZONE
Eastern
Zone
66
53
G
G
G
PM2.5
PM2.5
OZONE
OZONE
OZONE
South Central Bay
55
51
G
G
G
PM2.5
PM2.5
PM2.5
PM2.5
OZONE
Santa Clara Valley
53
46
G
G
G
PM2.5
PM2.5
OZONE
OZONE
OZONE

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