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

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

26 cities in Gyeonggi-do, South Korea ranked by their average PM2.5 over the 30 days. Worst: Pyeongtaek at 23.3 µg/m³, #335 of 2,914 cities in the world. Cleanest: Gapyeong at 14.6. 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.

← Bucheon-si 17% 10%0
Every city in Gyeonggi-do, South Korea ranked for April 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. 1Bucheon-si
    17%
  2. 2Pyeongtaek
    13%
  3. 3Hwaseong-si
    13%
  4. 4Gwangmyeong
    13%
  5. 5Suwon
    13%
  6. 6Ansan-si
    10%
  7. 7Gimpo-si
    10%
  8. 8Osan
    10%
  9. 9Anyang-si
    10%
  10. 10Goyang-si
    10%
  11. 11Anseong
    10%
  12. 12Seongnam-si
    10%
  13. 13Pubal
    7%
  14. 14Hwado
    7%
  15. 15Munsan
    7%
  16. 16Gwangju
    7%
  17. 17Wabu
    3%
  18. 18Yeoju
    3%
  19. 19Guri-si
    3%
  20. 20Icheon-si
    3%
  21. 21Hanam
    3%
  22. 22Uijeongbu-si
    3%
  23. 23Namyangju
    3%
  24. 24Yangp'yŏng
    0%
  25. 25Yangju
    0%
  26. 25Gapyeong
    0%
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, April 2026 · All cities in South Korea, April 2026 · Gyeonggi-do now

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SmogRank, most polluted cities in Gyeonggi-do, South Korea, PM2.5, April 2026, smogrank.com/kr/region/gyeonggi-do/history/2026-04 (accessed 6 Oct 2026).

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