Site

State

PM AQI* (ug/m3)

Seeley Elementary School

MT

18

Sandpoint U of I

ID

18

Bismarck Residential

ND

13

St. Maries

ID

13

Libby Courthouse

MT

13

Grangeville

ID

13

Pinehurst

ID

11

Hannover

ND

10

Havre

MT

10

Beulah North

ND

9