Site

State

PM AQI* (ug/m3)

Rossiter Pump House

MT

29

Fargo NW

ND

23

Libby Courthouse

MT

14

Beulah North

ND

14

St. Maries

ID

13

Bismarck Residential

ND

12

Seeley Elementary School

MT

12

Hannover

ND

11

Hamilton PS 46

MT

11

French Town - Beckwith

MT

9