Site

State

PM AQI* (ug/m3)

Fargo NW

ND

27

TRNP-NU

ND

25

Bismarck Residential

ND

24

Beulah North

ND

24

Libby Courthouse

MT

23

Lake Ilo

ND

21

Sidney 201

MT

20

Pinehurst

ID

18

Lostwood NWR

ND

18

RYDER

ND

18