Site

State

PM AQI* (ug/m3)

Billlings Lockwood

MT

7

Hannover

ND

7

Beulah North

ND

6

Great Falls Overlook Park

MT

6

Libby Courthouse

MT

6

Bismarck Residential

ND

6

Juliaetta E-sampler

ID

6

Havre

MT

6

Seeley Elementary School

MT

6

Sidney 201

MT

5