Site

State

PM AQI* (ug/m3)

Plummer CDA Tribe

ID

10

Bismarck Residential

ND

9

Libby Courthouse

MT

7

Sandpoint U of I

ID

7

Hannover

ND

7

Beulah North

ND

6

Lostwood NWR

ND

6

Juliaetta E-sampler

ID

6

RYDER

ND

6

Porthill

BC

5