SmogRank / World / United States / North Carolina / October 2026

Most polluted cities in North Carolina, United States, October 2026

14 cities in North Carolina, United States ranked by their average PM2.5 so far (5 of 31 days). Worst: Wake Forest at 12.6 µg/m³, #293 of 2,246 cities in the world. Cleanest: Marvin at 3.3. 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.

← Wake Forest 0% 0.75%0
Every city in North Carolina, United States ranked for October 2026, one column each, ranked by unhealthy days: height is the share of its measured days that were unhealthy, colour its average. Point at it to read a city; tap to open it.
  1. 1Wake Forestlow-cost sensors
    0%
  2. 2Murraysville
    0%
  3. 3Winston-Salem
    0%
  4. 4Clemmons
    0%
  5. 5Morrisville
    0%
  6. 6Durham
    0%
  7. 7Charlotte
    0%
  8. 7Fayetteville
    0%
  9. 9Raleigh
    0%
  10. 10Greensboro
    0%
  11. 11Hickory
    0%
  12. 12Tarboro
    0%
  13. 13Asheville
    0%
  14. 14Marvin
    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.

Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

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, October 2026 · All cities in United States, October 2026 · North Carolina now

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SmogRank, most polluted cities in North Carolina, United States, PM2.5, October 2026 (so far), smogrank.com/us/region/north-carolina/history/2026-10 (accessed 6 Oct 2026).

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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.