SmogRank / World / India / Odisha / December 2025

Most polluted cities in Odisha, India, December 2025

11 cities in Odisha, India ranked by their average PM2.5 over the 31 days. Worst: Dera Colliery Township at 126.3 µg/m³, #33 of 2,960 cities in the world. Cleanest: Keonjhargarh at 43.2. 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.

← Dera Colliery Township 100% 75%0
Every city in Odisha, 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. 1Dera Colliery Township
    100%
  2. 2Angul
    100%
  3. 3Bhubaneswar
    100%
  4. 4Cuttack
    100%
  5. 5Byasanagar
    100%
  6. 6Barbil
    100%
  7. 7Rourkela
    100%
  8. 8Belpahar
    100%
  9. 9Koīra
    96%
  10. 10Keonjhargarh
    93%
  11. 11Joda
    84%
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 · Odisha now

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SmogRank, most polluted cities in Odisha, India, PM2.5, December 2025, smogrank.com/in/region/odisha/history/2025-12 (accessed 7 Oct 2026).

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