Site	State	PM AQI* (ug/m3)
Nogales Post Office	AZ	29
Thirty Third	AZ	28
Libby Courthouse	MT	25
Portola	CA	25
West Phoenix	AZ	24
Mira Loma - Van Buren	CA	23
Calexico - Ethel Street	CA	21
South Phoenix	AZ	21
Phoenix JLG Supersite	AZ	20
Lake George-Lake George RS ...	CO	19