Site

State

PM NowCast (ug/m3)

Libby Courthouse

MT

24

Seeley Elementary School

MT

16

Columbia Falls

MT

14

Pinehurst

ID

12

Beulah North

ND

11

St. Maries

ID

11

Malta

MT

10

Billlings Lockwood

MT

9

Rossiter Pump House

MT

9

Grangeville

ID

9