Site

State

PM AQI* (ug/m3)

Mt Hall

ID

34

Bismarck Residential

ND

12

Lewiston

ID

7

Havre

MT

6

Juliaetta E-sampler

ID

6

Seeley Elementary School

MT

5

Birney

MT

5

Porthill

BC

5

Fargo NW

ND

4

St. Maries

ID

4