SmogRank / World / United States / North Carolina / March 2026
Most polluted cities in North Carolina, United States, March 2026
17 cities in North Carolina, United States ranked by their average PM2.5 over the 31 days. Worst: Wake Forest at 12.7 µg/m³, #1,101 of 2,947 cities in the world. Cleanest: Roanoke Rapids at 7.5. A city needs measurements on 70% of the days to be ranked.
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.
- 1Wake Forestlow-cost sensors 0%
- 2Winston-Salem 0%
- 3Charlotte 0%
- 4Clemmons 0%
- 4Lexington 0%
- 4Morrisville 0%
- 7Fayetteville 0%
- 8Durham 0%
- 8Hickory 0%
- 8Raleigh 0%
- 11Greensboro 0%
- 12Asheville 0%
- 13Clayton 0%
- 13Murraysville 0%
- 15Tarboro 0%
- 16Greenville 0%
- 17Roanoke Rapids 0%
Low-cost sensors: consumer units, counted only in cities with no government-grade monitor; they read close to reference monitors on the whole, but 15 to 25% high in humid air. How we use them.
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 2026 · All cities in United States, March 2026 · North Carolina now
Use this board
SmogRank, most polluted cities in North Carolina, United States, PM2.5, March 2026, smogrank.com/us/region/north-carolina/history/2026-03 (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.