SmogRank / World / United States / New Jersey / September 2026

Most polluted cities in New Jersey, United States, September 2026

19 cities in New Jersey, United States ranked by their average PM2.5 over the 30 days. Worst: Palmyra at 6.9 µg/m³, #1,282 of 2,949 cities in the world. Cleanest: Paulsboro at 3.8. 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.

← Bayonne 4% 3%0
Every city in New Jersey, United States ranked for September 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. 1Bayonne
    4%
  2. 2Palmyra
    0%
  3. 3Camdenlow-cost sensors
    0%
  4. 4Pennsauken
    0%
  5. 4Elizabeth
    0%
  6. 6Toms River
    0%
  7. 6Jersey City
    0%
  8. 6Linden
    0%
  9. 9Smithville
    0%
  10. 10Ewing
    0%
  11. 10Trenton
    0%
  12. 12Newark
    0%
  13. 13Paterson
    0%
  14. 14Mendham
    0%
  15. 15Atlantic City
    0%
  16. 16Fort Lee
    0%
  17. 17New Brunswick
    0%
  18. 18South Vineland
    0%
  19. 19Paulsboro
    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, September 2026 · All cities in United States, September 2026 · New Jersey now

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SmogRank, most polluted cities in New Jersey, United States, PM2.5, September 2026, smogrank.com/us/region/new-jersey/history/2026-09 (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.