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, July 19 at 11:10 AM
5 County Map
Thu
Fri
Sat
Sun
Mon
North Counties
27
38
G
G
G
OZONE
PM2.5
PM2.5
OZONE
OZONE
Coast and Central Bay
46
50
M
M
M
PM2.5
PM2.5
PM2.5
PM2.5
PM2.5
Eastern District
58
57
G
G
G
OZONE
PM2.5
PM2.5
PM2.5
OZONE
South Central Bay
46
46
G
G
G
PM2.5
PM2.5
PM2.5
PM2.5
PM2.5
Santa Clara Valley
51
55
G
G
G
OZONE
PM2.5
PM2.5
OZONE
OZONE

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