SmogRank / World / South Korea / Gyeonggi-do / April 2024

Most polluted cities in Gyeonggi-do, South Korea, April 2024

26 cities in Gyeonggi-do, South Korea ranked by their average PM2.5 over the 30 days. Worst: Yeoju at 29.3 µg/m³, #81 of 2,482 cities in the world. Cleanest: Seongnam-si at 18.3. A city needs measurements on 70% of the days to be ranked.

About 558K people in these 20 cities breathed unhealthy air on an average day of April 2024.

Ranked by people: each city's population times its share of unhealthy days, those with a daily mean over 35.4 µg/m³ (US AQI 101+). That is how many people living there breathed unhealthy air on an average day. Only cities measured at 2 or more places at least 3 km apart are ranked: one monitor shouldn't speak for a whole city. Population is the city itself, not its wider metro area.

← Goyang-si 114K 100K0
Every city in Gyeonggi-do, South Korea ranked for April 2024 with monitors in two or more places, one column each, ranked by people breathing unhealthy air: height is people on an average day, colour its average. Point at it to read a city; tap to open it.
  1. 1Goyang-si
    114K
  2. 2Pyeongtaek
    65.1K
  3. 3Bucheon-si
    60.8K
  4. 4Hwaseong-si
    53.4K
  5. 5Ansan-si
    44.5K
  6. 6Suwon
    44.1K
  7. 7Icheon-si
    42K
  8. 8Yeoju
    32K
  9. 9Osan
    25.6K
  10. 10Anyang-si
    21.3K
  11. 11Gimpo-si
    14.5K
  12. 12Guri-si
    13.9K
  13. 13Hanam
    9.09K
  14. 14Yangp'yŏng
    8.93K
  15. 15Yangju
    6.43K
  16. 16Gwangju
    2.92K
  17. 17Uijeongbu-si
    0
  18. 18Munsan
    0
  19. 19Namyangju
    0
  20. 20Seongnam-si
    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 2024 · All cities in South Korea, April 2024 · Gyeonggi-do now

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SmogRank, most polluted cities in Gyeonggi-do, South Korea, PM2.5, April 2024, smogrank.com/kr/region/gyeonggi-do/history/2024-04 (accessed 6 Oct 2026).

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You're welcome to reuse a single chart, image or figure with this citation and a link. Terms. Raw monitor readings in bulk are published by OpenAQ, under each provider's licence.