SmogRank / World / South Korea / Gyeonggi-do / January 2025

Most polluted cities in Gyeonggi-do, South Korea, January 2025

26 cities in Gyeonggi-do, South Korea ranked by their average PM2.5 over the 31 days. Worst: Pubal at 37.5 µg/m³, #60 of 2,426 cities in the world. Cleanest: Gapyeong at 22.1. 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.

← Pubal 39% 30%0
Every city in Gyeonggi-do, South Korea ranked for January 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. 1Pubal
    39%
  2. 2Yeoju
    39%
  3. 3Yangp'yŏng
    35%
  4. 4Icheon-si
    35%
  5. 5Hwado
    32%
  6. 6Pyeongtaek
    29%
  7. 7Anseong
    29%
  8. 8Gwangju
    26%
  9. 9Osan
    23%
  10. 10Suwon
    23%
  11. 11Munsan
    23%
  12. 12Goyang-si
    23%
  13. 13Ansan-si
    23%
  14. 14Guri-si
    19%
  15. 15Gwangmyeong
    19%
  16. 16Gimpo-si
    19%
  17. 17Wabu
    19%
  18. 18Bucheon-si
    19%
  19. 19Anyang-si
    19%
  20. 20Uijeongbu-si
    16%
  21. 21Yangju
    16%
  22. 22Namyangju
    16%
  23. 23Hwaseong-si
    16%
  24. 24Seongnam-si
    16%
  25. 25Gapyeong
    10%
  26. 26Hanam
    10%
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, January 2025 · All cities in South Korea, January 2025 · Gyeonggi-do now

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SmogRank, most polluted cities in Gyeonggi-do, South Korea, PM2.5, January 2025, smogrank.com/kr/region/gyeonggi-do/history/2025-01 (accessed 7 Oct 2026).

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