Site

State

PM AQI* (ug/m3)

Portola

CA

34

Mira Loma - Van Buren

CA

27

Los Angeles - N. Main Street

CA

23

Upland

CA

23

Compton

CA

21

North Holywood

CA

21

South Long Beach

CA

20

Riverside - Rubidoux

CA

20

Visalia - N. Church Street

CA

19

Anaheim

CA

18