Site

State

PM AQI* (ug/m3)

South Phoenix

AZ

18

Tempe

AZ

16

North Valley

NM

13

Ascarate Park Southeast C37

TX

12

Geronimo

AZ

11

Anthony

NM

11

West Phoenix

AZ

10

Lubbock 12th Street

TX

10

Socorro Hueco C49

TX

9

Glendale Community College

AZ

9