Site

State

PM AQI* (ug/m3)

Baytown C148

TX

22

San Antonio Old Hwy90 C677

TX

20

Westlake

LA

19

Laredo C313

TX

18

Clinton C403

TX

17

Houston East C1

TX

17

Thomas Jefferson School C303

TX

16

Hamshire C64

TX

16

Mission C43

TX

16

WATSON

KY

15