Site

State

PM AQI* (ug/m3)

Hidden Valley

AZ

18

Ascarate Park Southeast C37

TX

11

Anthony

NM

10

Socorro Hueco C49

TX

10

El Paso UTEP C12

TX

9

Santa Teresa

NM

9

Douglas Red Cross

AZ

9

Phoenix JLG Supersite

AZ

8

Geronimo

AZ

8

Diablo

AZ

8