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, October 18 at 11:15 AM
5 County Map
Thu
Fri
Sat
Sun
Mon
North Counties
63
61
M
M
G
PM2.5
PM2.5
PM2.5
PM2.5
OZONE
Coast and Central Bay
70
68
M
M
G
PM2.5
PM2.5
PM2.5
PM2.5
PM2.5
Eastern District
68
63
G
G
G
PM2.5
PM2.5
OZONE
OZONE
OZONE
South Central Bay
55
55
G
G
G
PM2.5
PM2.5
PM2.5
PM2.5
PM2.5
Santa Clara Valley
74
67
G
G
G
OZONE
OZONE
OZONE
OZONE
OZONE

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Air Quality Advisory

Air Quality Advisory through Friday, October 19, due to wildfire smoke from southern Oregon fires. See our Wildfire Safety Tips web page.