Site	State	PM AQI* (ug/m3)
Hidden Valley	AZ	17
Ascarate Park Southeast C37	TX	16
Chamizal C41	TX	16
Socorro Hueco C49	TX	14
El Paso UTEP C12	TX	12
Geronimo	AZ	10
North Valley	NM	9
Jefferson	NM	9
Yuma Supersite	AZ	9
Nogales Post Office	AZ	9