Site

State

PM AQI* (ug/m3)

Laredo C313

TX

22

Isla Blanca C323/C667

TX

21

Fresno - Garland

CA

21

Salmon PM2.5

ID

21

Eugene - Amazon Park

OR

20

St. Maries

ID

19

Tacoma-L St

WA

19

Brownsville C80

TM

19

Lyons

OR

19

Madras - Westside School

OR

19