Site

State

PM AQI* (ug/m3)

Portola

CA

42

South Long Beach

CA

38

Mira Loma - Van Buren

CA

36

Anaheim

CA

34

Riverside - Rubidoux

CA

32

Salmon PM2.5

ID

29

North Holywood

CA

28

Glendora - Laurel

CA

28

Upland

CA

27

Los Angeles - N. Main Street

CA

27