SmogRank / World / South Korea / Gyeonggi-do / January 2026

Most polluted cities in Gyeonggi-do, South Korea, January 2026

26 cities in Gyeonggi-do, South Korea ranked by their average PM2.5 over the 31 days. Worst: Pubal at 24.0 µg/m³, #278 of 2,593 cities in the world. Cleanest: Goyang-si at 16.8. 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 13% 10%0
Every city in Gyeonggi-do, South Korea ranked for January 2026, 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
    13%
  2. 2Hwado
    13%
  3. 3Icheon-si
    13%
  4. 4Osan
    13%
  5. 5Anseong
    13%
  6. 6Pyeongtaek
    13%
  7. 7Yeoju
    10%
  8. 8Wabu
    10%
  9. 9Gwangju
    10%
  10. 10Gimpo-si
    10%
  11. 11Yangp'yŏng
    10%
  12. 12Guri-si
    10%
  13. 12Namyangju
    10%
  14. 12Gwangmyeong
    10%
  15. 15Munsan
    10%
  16. 16Suwon
    10%
  17. 17Bucheon-si
    10%
  18. 18Uijeongbu-si
    10%
  19. 18Hanam
    10%
  20. 20Seongnam-si
    10%
  21. 21Anyang-si
    10%
  22. 22Ansan-si
    10%
  23. 23Yangju
    10%
  24. 24Hwaseong-si
    10%
  25. 25Goyang-si
    10%
  26. 26Gapyeong
    6%
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 2026 · All cities in South Korea, January 2026 · Gyeonggi-do now

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

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