Site

State

PM AQI* (ug/m3)

Houston North Wayside C405

TX

18

Kooker Park

FL

15

Houston North Loop C1052

TX

12

Shreveport Airport

LA

12

Lafayette

LA

12

Thibodaux

LA

11

Clinton C403

TX

11

Conroe Relocated C78

TX

11

MARION

AR

10

San Antonio Old Hwy90 C677

TX

10