Air Quality Index Summaries Statistical summaries of the daily Air Quality Index values for 2009 through 2018 are below. The validated data are available for the following "core-based" statistical areas: Charlotte-Gastonia-Rock Hill, SC MSA Fayetteville MSA Greensboro-Winston-Salem MSA Raleigh-Durham-Chapel Hill MSA Wilmington MSA Asheville MSA Hickory-Morganton-Lenoir MSA
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