SmogRank / World / United States / North Carolina / March 2024
Most polluted cities in North Carolina, United States, March 2024
17 cities in North Carolina, United States ranked by their average PM2.5 over the 31 days. Worst: Durham at 10.2 µg/m³, #373 of 1,643 cities in the world. Cleanest: Roanoke Rapids at 5.5. A city needs measurements on 70% of the days to be ranked.
OpenAQ's archive, where our readings come from, has almost none from the United States for March 20, 2024: cities in the United States have it from the EPA's own records of the same monitors. Why.
Ranked by unhealthy days: the share of each city's measured days with a daily mean over 35.4 µg/m³ (US AQI 101+), Unhealthy for Sensitive Groups or worse on the US EPA's scale. Ties go to the higher average.
- 1Clemmons 3%
- 2Winston-Salem 3%
- 3Durham 0%
- 4Marvin 0%
- 5Hickory 0%
- 6Charlotte 0%
- 7Clayton 0%
- 8Morrisville 0%
- 9Tarboro 0%
- 10Fayetteville 0%
- 10Raleigh 0%
- 12Greensboro 0%
- 13Lexington 0%
- 14Murraysville 0%
- 15Greenville 0%
- 16Asheville 0%
- 17Roanoke Rapids 0%
The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales
All cities in the world, March 2024 · All cities in United States, March 2024 · North Carolina now
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SmogRank, most polluted cities in North Carolina, United States, PM2.5, March 2024, smogrank.com/us/region/north-carolina/history/2024-03 (accessed 6 Oct 2026).
You're welcome to reuse a single chart, image or figure with this citation and a link. Terms. Raw monitor readings in bulk are published by OpenAQ, under each provider's licence.