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, April 16 at 9:31 AM
5 County Map
Wed
Thu
Fri
Sat
Sun
Northern
Zone
42
55
G
G
G
PM2.5
PM2.5
PM2.5
PM2.5
PM2.5
Coast and Central Bay
53
57
G
G
G
PM2.5
PM2.5
PM2.5
PM2.5
PM2.5
Eastern
Zone
44
46
G
G
G
OZONE
PM2.5
OZONE
OZONE
OZONE
South Central Bay
46
42
G
G
G
PM2.5
PM2.5
OZONE
OZONE
OZONE
Santa Clara Valley
42
46
G
G
G
OZONE
PM2.5
OZONE
OZONE
OZONE

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