Site

State

PM AQI* (ug/m3)

Libby Courthouse

MT

22

Seeley Elementary School

MT

18

Havre

MT

11

Pinehurst

ID

10

French Town - Beckwith

MT

9

Fargo NW

ND

8

St. Maries

ID

8

Cut Bank

MT

8

Hannover

ND

7

Lostwood NWR

ND

7