Site

State

PM AQI* (ug/m3)

Eagle Pass C319

TX

19

South Phoenix

AZ

15

Big Bend NP

TX

13

Odessa Gonzales C1014

TX

12

Grand Canyon ozone bench

AZ

12

Tempe

AZ

11

Hidden Valley

AZ

11

Hanover-297 Manzana Rojo

NM

11

Eastwood

AZ

9

Socorro-106 Neel Ave

NM

9