Site

State

PM AQI* (ug/m3)

Broadus

MT

29

Birney

MT

13

Billlings Lockwood

MT

13

Fargo NW

ND

11

Bozeman High School

MT

10

Sidney 201

MT

6

Hannover

ND

6

RYDER

ND

5

Beulah North

ND

5

Malta

MT

5