Site

State

PM AQI* (ug/m3)

Ascarate Park Southeast C37

TX

12

El Paso UTEP C12

TX

7

Socorro Hueco C49

TX

7

Hidden Valley

AZ

7

Yuma Supersite

AZ

7

Nogales Post Office

AZ

6

Douglas Red Cross

AZ

5

Alamo Lake

AZ

5

Hobbs Jefferson

NM

5

Odessa Gonzales C1014

TX

5