SmogRank / World / India / Uttar Pradesh / December 2025

Most people breathing unhealthy air in Uttar Pradesh, India, December 2025

9 cities in Uttar Pradesh, India measured at 2 or more places, ranked by how many people breathed unhealthy air on an average day over the 31 days. The most people breathing unhealthy air: Kanpur, India, about 2.82M on an average day. A city needs measurements on 70% of the days to be ranked.

About 11.7M people in these 9 cities breathed unhealthy air on an average day of December 2025.

Ranked by people: each city's population times its share of unhealthy days, those with a daily mean over 35.4 µg/m³ (US AQI 101+). That is how many people living there breathed unhealthy air on an average day. Only cities measured at 2 or more places at least 3 km apart are ranked: one monitor shouldn't speak for a whole city. Population is the city itself, not its wider metro area.

← Kanpur 2.82M 2M0
Every city in Uttar Pradesh, India ranked for December 2025 with monitors in two or more places, one column each, ranked by people breathing unhealthy air: height is people on an average day, colour its average. Point at it to read a city; tap to open it.
  1. 1Kanpur
    2.82M
  2. 2Lucknow
    2.47M
  3. 3Agra
    1.43M
  4. 4Meerut
    1.22M
  5. 5Varanasi
    1.16M
  6. 6Prayagraj
    1.07M
  7. 7Morādābād
    721K
  8. 8Bareilly
    481K
  9. 9Noida
    294K
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, December 2025 · All cities in India, December 2025 · Uttar Pradesh now

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SmogRank, most polluted cities in Uttar Pradesh, India, by people breathing unhealthy air, PM2.5, December 2025, smogrank.com/in/region/uttar-pradesh/history/2025-12?by=people (accessed 8 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.