Air Quality Index Summaries
Statistical summaries of the daily Air Quality Index values for the most recent calendar year completed and validated are available for the following "core-based" statistical areas. The areas marked with * contain two pages, one for monitors inside the metropolitan statistical area proper (MSA) and one for monitors in the core-based boundary but outside of the MSA.

• Charlotte-Gastonia-Rock Hill, SC MSA [PDF] [Text]
• Fayetteville MSA [PDF] [Text]
• Greensboro-Winston-Salem MSA* [PDF] [Text]

• Raleigh-Durham-Chapel Hill MSA* [PDF] [Text]
• Wilmington MSA [PDF] [Text]
• Asheville MSA* [PDF] [Text]
• Hickory-Morganton-Lenoir MSA [PDF] [Text]

Statewide Annual Air Quality Pollutant Concentration Summaries

To help with interpreting these statistics, pollutant levels that would exceed a national or state ambient air quality standard are listed in this table

Air Quality Data Analyses
View detailed raw data, background information, charts, and maps concerning concentrations in our state for these pollutants and meteorology data:

Air Monitoring Sites
View a map showing the locations of ambient air monitors operated in 2011 or 2012 in North Carolina.