SmogRank / World / Asia / South Korea / Gangwon-do

Most polluted cities in Gangwon-do, South Korea

14 measured cities, this year; 14 above the WHO annual guideline. Worst: Gangneung at 89.8 µg/m³, #21 in the world.

Seoul: 1 measured cityIncheon: 2 measured citiesGyeonggi-do: 25 measured citiesGyeongsangbuk-do: 16 measured citiesChungcheongnam-do: 13 measured citiesDaejeon: 1 measured cityGangwon-do: 14 measured citiesNorth Chungcheong: 7 measured cities#14 Donghae City: 37.5 µg/m³#13 Wŏnju: 39.0 µg/m³#12 Sokcho: 43.7 µg/m³#11 Cheorwon: 44.3 µg/m³#10 Neietsu: 44.8 µg/m³#9 Hongch’ŏn: 47.4 µg/m³#8 Yanggu: 48.3 µg/m³#7 Jumunjin: 51.8 µg/m³#6 Hwacheon: 54.6 µg/m³#5 Santyoku: 70.2 µg/m³#4 T’aebaek: 73.5 µg/m³#3 Chuncheon: 78.2 µg/m³#2 Kosong: 80.4 µg/m³#1 Gangneung: 89.8 µg/m³
Each dot is a measured city, coloured by its PM2.5; tap a dot to open the city.
← Gangneung 89.8 WHO annual guideline
Every measured city in Gangwon-do, South Korea, one column each, worst on the left and cleanest on the right. Point at it to read a city; tap to open it.
  1. 1Gangneung 17518.0×
  2. 2Kosong 16816.1×
  3. 3Chuncheon 16715.6×
  4. 4T’aebaek 16414.7×
  5. 5Santyoku 16114.0×
  6. 6Hwacheon 14810.9×
  7. 7Jumunjin 14110.4×
  8. 8Yanggu 1339.7×
  9. 9Hongch’ŏn 1309.5×
  10. 10Neietsu 1249.0×
  11. 11Cheorwon 1238.9×
  12. 12Sokcho 1218.7×
  13. 13Wŏnju 1107.8×
  14. 14Donghae City 1067.5×
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

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SmogRank, most polluted cities in Gangwon-do, South Korea, PM2.5, this year to 2 Oct 2026, 04:00 UTC, smogrank.com/kr/region/gangwon-do?w=year.

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Updated 2026-10-02 04:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.