Site

State

PM AQI* (ug/m3)

Portola

CA

23

Yosemite Village - Visitor ...

CA

18

Anderson

CA

17

Red Bluff-CDF Loop

CA

15

Calexico - Ethel Street

CA

14

Chester BAM

CA

14

Indio - Jackson Street

CA

14

San Diego - Sherman Element...

CA

13

El Cajon - Lexington Elemen...

CA

12

Indio-29 Palms

CA

11