Site

State

PM AQI* (ug/m3)

Hinds CC

MS

19

North OKC

OK

19

ADEQ-DSR

AR

18

Ponca City

OK

17

Jackson NCORE

MS

17

Healdton

OK

16

Moore

OK

16

McAlester

OK

16

Texarkana New Boston

TX

15

Ellyson Industrial Park

FL

15