Site

State

PM AQI* (ug/m3)

Hanover-NF-4204 T

NM

223

Hidden Valley

AZ

36

Nogales Post Office

AZ

16

Socorro Hueco C49

TX

15

Chamizal C41

TX

14

Jefferson

NM

14

Durango Complex

AZ

14

Ascarate Park Southeast C37

TX

14

South Valley

NM

13

North Valley

NM

12