Site

State

PM AQI* (ug/m3)

Bismarck Residential

ND

13

Malta

MT

13

Great Falls Overlook Park

MT

8

Birney

MT

7

Beulah North

ND

6

Hannover

ND

6

Libby Courthouse

MT

5

Juliaetta E-sampler

ID

5

Fargo NW

ND

5

Broadus

MT

5