This section contains selected ozone animations that show how ozone patterns change over the course of a given day - as a map of the Bay Area changes color according to the Air Quality Index scale.
Today’s Current Hour Still Image
Yesterday's peak 8-hr average
Note: Yesterday’s maps are not available until around 9am the following morning.
Air District systems will undergo planned maintenance from 8am Friday 4/28 through 11pm Sunday 4/30.
There may be disruptions in some services. We apologize for any inconvenience.
Air Quality Index
Ozone Health Effects