Site

State

PM AQI* (ug/m3)

Lewiston

ID

22

Libby Courthouse

MT

17

St. Maries

ID

17

Fargo NW

ND

16

Pinehurst

ID

13

Beulah North

ND

11

Seeley Elementary School

MT

11

Bismarck Residential

ND

11

Kamiah

ID

10

RYDER

ND

9