Site	State	PM AQI* (ug/m3)
Healdton	OK	22
Corpus Christi - National S...	TX	22
San Antonio Old Hwy90 C677	TX	20
Laredo C313	TX	19
Union	OK	18
Brownsville C80	TM	17
Corpus Christi Huisache C98	TX	17
North OKC	OK	16
Austin North Interstate 35 ...	TX	16
San Antonio Northwest C23	TX	16