Bay Area Ozone Movies

Although the Bay Area is one of the cleanest of the five major urban air basins in California, there are still several days annually when air pollution exceeds the state or federal air quality standards.

Click on a link below to view an animated depiction of daily ozone development patterns, overlaid on a map of the Bay Area.

Bay Area Ground-Level Ozone maps:

Today’s Animation

Today’s Current Hour Still Image

Yesterday’s Animation

Yesterday's peak 8-hr average
Yesterday's peak 1-hr average
Note that yesterday’s maps are not available until around 9am the following morning.

Selected 2006 Ground-Level Ozone Maps

September 12

September 11

August 31

August 9

July 25

July 24

July 23

July 22

July 21

July 20

July 19

July 18

July 17

July 16

July 15

July 8

June 24

June 23

June 22

June 21

June 20

June 17

May 14

Selected 2005 Ground-Level Ozone Map

July 23, 2005

Selected 2004 Ground-Level Ozone Map

September 7 , 2004