Site

State

PM AQI* (ug/m3)

El Paso UTEP C12

TX

10

Geronimo

AZ

10

Anthony

NM

9

North Valley

NM

9

Phoenix JLG Supersite

AZ

9

Ascarate Park Southeast C37

TX

9

Jefferson

NM

9

Coachline

AZ

9

South Valley

NM

9

Socorro Hueco C49

TX

8