Site

State

PM AQI* (ug/m3)

Springville

CA

24

Mission Viejo

CA

22

Reseda

CA

21

North Holywood

CA

20

Portola

CA

20

Otay Mesa - Donovan

CA

20

Los Angeles - N. Main Street

CA

19

Santa Clarita

CA

19

Mira Loma - Van Buren

CA

19

Temecula (Lake Skinner)

CA

18