Site

State

PM AQI* (ug/m3)

Havre

MT

8

Bismarck Residential

ND

7

Lostwood NWR

ND

6

Libby Courthouse

MT

6

Malta

MT

6

Rossiter Pump House

MT

6

Sandpoint U of I

ID

5

Seeley Elementary School

MT

5

Juliaetta E-sampler

ID

5

Porthill

BC

5