Site

State

PM AQI* (ug/m3)

Hidden Valley

AZ

25

El Paso UTEP C12

TX

9

Nogales Post Office

AZ

9

Anthony

NM

9

Ascarate Park Southeast C37

TX

8

Yuma Supersite

AZ

7

Lubbock 12th Street

TX

7

Socorro Hueco C49

TX

7

Geronimo

AZ

7

Odessa Gonzales C1014

TX

7