N.C. Department of Environment and Natural Resources
 Welcome to the North Carolina Division of Air Quality
Monitoring Data >> Data Archives & Statistical Summaries

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 metropolitan statistical areas

  • 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

View the summary as

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

Detailed Ozone Data
Select a year and a format to view either 1-hour or 8-hour ozone averages at every monitor on every day of that year.

View the 8-hour averages as
View the 1-hour averages as

Air Monitoring Sites
View a map showing the locations of ambient air monitors in North Carolina courtesy US EPA AIRData

Ozone "Design Value" Maps
View several North Carolina maps showing the 3-year average fourth-highest daily 8-hour ozone concentrations in each county.

PM-2.5 Data Analysis
View background information, charts, and maps concerning PM-2.5 concentrations in our state.

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Last Modified: Tue June 24 13:55:14 2008
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