Site

State

PM AQI* (ug/m3)

Chesterfield

SC

22

JPRECC

KY

19

MARION

AR

16

HERNANDO

MS

15

PARR

AR

15

Mission C43

TX

15

CORNER

AL

15

SPRNGDLE

AR

15

Laredo C313

TX

15

San Antonio Old Hwy90 C677

TX

14