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
Friday, March 27 at 3:52 PM
5 County Map
Fri
Sat
Sun
Mon
Tue
Northern
Zone
55
50
46
46
G
PM2.5
PM2.5
PM2.5
PM2.5
PM2.5
Coast and Central Bay
50
63
57
56
G
PM2.5
NO2
NO2
NO2
OZONE
Eastern
Zone
29
36
37
38
G
OZONE
OZONE
OZONE
OZONE
OZONE
South Central Bay
32
38
39
37
G
OZONE
OZONE
OZONE
OZONE
OZONE
Santa Clara Valley
33
33
34
36
G
OZONE
OZONE
OZONE
OZONE
NO2

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