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

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

26 cities in Gyeonggi-do, South Korea ranked by their average PM2.5 over the 365 days; 26 above the WHO annual guideline (5.0 µg/m³). Worst: Pubal at 21.2 µg/m³, #226 of 2,624 cities in the world. Cleanest: Gapyeong at 14.0. 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 17% 15%0
Every city in Gyeonggi-do, South Korea ranked for 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
    17%
  2. 2Yeoju
    12%
  3. 3Anseong
    11%
  4. 4Pyeongtaek
    11%
  5. 5Icheon-si
    10%
  6. 6Osan
    10%
  7. 7Ansan-si
    9%
  8. 8Hwaseong-si
    9%
  9. 9Yangp'yŏng
    9%
  10. 10Gimpo-si
    9%
  11. 11Goyang-si
    9%
  12. 12Gwangmyeong
    9%
  13. 13Bucheon-si
    9%
  14. 14Suwon
    8%
  15. 15Guri-si
    8%
  16. 16Munsan
    8%
  17. 17Gwangju
    8%
  18. 18Anyang-si
    7%
  19. 19Hwado
    7%
  20. 20Uijeongbu-si
    7%
  21. 21Yangju
    6%
  22. 22Seongnam-si
    6%
  23. 23Wabu
    6%
  24. 24Namyangju
    6%
  25. 25Hanam
    6%
  26. 26Gapyeong
    4%
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, 2025 · All cities in South Korea, 2025 · Gyeonggi-do now

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SmogRank, most polluted cities in Gyeonggi-do, South Korea, PM2.5, 2025, smogrank.com/kr/region/gyeonggi-do/history/2025 (accessed 6 Oct 2026).

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