Site

State

PM AQI* (ug/m3)

Socorro Hueco C49

TX

15

Hidden Valley

AZ

10

Ascarate Park Southeast C37

TX

9

Eagle Pass C319

TX

9

Odessa Gonzales C1014

TX

7

Yuma Supersite

AZ

7

El Paso UTEP C12

TX

7

Hobbs Jefferson

NM

7

Las Cruces ED

NM

6

Chamizal C41

TX

6