Site	State	PM AQI* (ug/m3)
Maple Falls-Azure Way	WA	32
Irmo	SC	27
Mammoth Lakes	CA	25
Ascarate Park Southeast C37	TX	25
Toppenish-Yakama Tribe	WA	24
Portola	CA	23
Anderson	CA	21
Rossiter Pump House	MT	20
Yakima-4th Ave	WA	20
Libby Courthouse	MT	19