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  1. Home
  2. About DEQ
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  4. Air Quality
  5. Air Quality Planning
  6. Attainment Status of National Ambient Air Quality Standards
  7. Designation History (by Pollutant)

Designation History (by pollutant)

Ozone Designation History


Sulfur Dioxide (SO2) Designation History

Particle Pollution (PM2.5) Designation History


Designation History Map for Carbon Monoxide (CO)

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          • Attainment
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              • Ozone Designation History
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              • Sulfur Dioxide (SO2) Designation History
              • 1-Hour Sulfur Dioxide Boundary Recommendation
              • Particle Pollution (PM2.5) Designation History
            • 2024 PM2.5 Annual Standard

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North Carolina Department of Environmental Quality
217 West Jones Street
Raleigh, NC 27603 Map It
877-623-6748
 
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