SmogRank / World / India / Uttar Pradesh / October 2025

Most polluted cities in Uttar Pradesh, India, October 2025

22 cities in Uttar Pradesh, India ranked by their average PM2.5 over the 31 days. Worst: Loni at 127.9 µg/m³, #6 of 2,564 cities in the world. Cleanest: Varanasi at 31.7. 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.

← Ghāziābād 97% 90%0
Every city in Uttar Pradesh, India ranked for October 2025, 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. 1Ghāziābād
    97%
  2. 2Dādri
    97%
  3. 3Greater Noida
    96%
  4. 4Hāpur
    96%
  5. 5Noida
    93%
  6. 6Loni
    92%
  7. 7Morādābād
    90%
  8. 8Bulandshahr
    87%
  9. 9Muzaffarnagar
    85%
  10. 10Meerut
    83%
  11. 11Bāghpat
    81%
  12. 12Gorakhpur
    81%
  13. 13Lucknow
    73%
  14. 14Kanpur
    63%
  15. 15Agra
    63%
  16. 16Bareilly
    63%
  17. 17Khurja
    57%
  18. 18Prayagraj
    57%
  19. 19Fīrozābād
    50%
  20. 20Jhānsi
    47%
  21. 21Vrindāvan
    45%
  22. 22Varanasi
    43%
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

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SmogRank, most polluted cities in Uttar Pradesh, India, PM2.5, October 2025, smogrank.com/in/region/uttar-pradesh/history/2025-10 (accessed 7 Oct 2026).

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