Site

State

PM AQI* (ug/m3)

Seeley Elementary School

MT

25

Libby Courthouse

MT

19

Pinehurst

ID

17

Beulah North

ND

15

St. Maries

ID

13

Lewiston

ID

13

Sandpoint U of I

ID

11

Thompson Falls HS

MT

10

Rossiter Pump House

MT

10

French Town - Beckwith

MT

9