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, November 23 at 11:34 AM
5 County Map
Sun
Mon
Tue
Wed
Thu
Northern
Zone
63
76
USG
USG
M
PM2.5
PM2.5
PM2.5
PM2.5
PM2.5
Coast and Central Bay
50
59
M
M
M
PM2.5
PM2.5
PM2.5
PM2.5
PM2.5
Eastern
Zone
46
57
USG
USG
M
PM2.5
PM2.5
PM2.5
PM2.5
PM2.5
South Central Bay
42
53
M
M
M
PM2.5
PM2.5
PM2.5
PM2.5
PM2.5
Santa Clara Valley
53
66
M
M
M
PM2.5
PM2.5
PM2.5
PM2.5
PM2.5

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