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
Wednesday, October 29 at 10:31 AM
5 County Map
Wed
Thu
Fri
Sat
Sun
Northern
Zone
57
55
M
M
M
PM2.5
PM2.5
PM2.5
PM2.5
PM2.5
Coast and Central Bay
61
42
G
M
M
PM2.5
PM2.5
PM2.5
PM2.5
PM2.5
Eastern
Zone
50
46
G
G
G
PM2.5
PM2.5
OZONE
PM2.5
PM2.5
South Central Bay
46
36
G
G
G
PM2.5
OZONE
OZONE
PM2.5
PM2.5
Santa Clara Valley
55
50
G
M
M
PM2.5
PM2.5
PM2.5
PM2.5
PM2.5

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