Site

State

PM AQI* (ug/m3)

Libby Courthouse

MT

19

Bismarck Residential

ND

11

Sandpoint U of I

ID

11

Seeley Elementary School

MT

11

RYDER

ND

11

St. Maries

ID

10

Beulah North

ND

9

Plummer CDA Tribe

ID

9

Hannover

ND

9

Pinehurst

ID

9