SmogRank / World / India / Uttar Pradesh / December 2025

Most unhealthy days in Uttar Pradesh, India, December 2025

22 cities in Uttar Pradesh, India ranked by their share of unhealthy days over the 31 days. The most unhealthy days: Noida, India, 31 of 31 measured days. 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.

← Noida 100% 75%0
Every city in Uttar Pradesh, India ranked for December 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. 1Noida
    31 of 31
  2. 2Dādri
    31 of 31
  3. 3Loni
    23 of 23
  4. 4Ghāziābād
    31 of 31
  5. 5Meerut
    31 of 31
  6. 6Greater Noida
    29 of 29
  7. 7Hāpur
    27 of 27
  8. 8Bāghpat
    24 of 24
  9. 9Muzaffarnagar
    31 of 31
  10. 10Bulandshahr
    31 of 31
  11. 11Khurja
    31 of 31
  12. 12Lucknow
    31 of 31
  13. 13Morādābād
    31 of 31
  14. 14Prayagraj
    31 of 31
  15. 15Kanpur
    31 of 31
  16. 16Agra
    31 of 31
  17. 17Varanasi
    31 of 31
  18. 18Gorakhpur
    23 of 26
  19. 19Fīrozābād
    23 of 31
  20. 20Bareilly
    20 of 31
  21. 21Vrindāvan
    16 of 31
  22. 22Jhānsi
    7 of 31
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, by unhealthy days, PM2.5, December 2025, smogrank.com/in/region/uttar-pradesh/history/2025-12?by=days (accessed 7 Oct 2026).

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