SmogRank / World / Asia / South Korea / North Chungcheong

Most polluted cities in North Chungcheong, South Korea

7 measured cities, this year; 7 above the WHO annual guideline. Worst: Yeongdong at 87.8 µg/m³, #22 in the world.

Seoul: 1 measured cityGyeonggi-do: 26 measured citiesGyeongsangbuk-do: 16 measured citiesDaegu: 2 measured citiesChungcheongnam-do: 14 measured citiesDaejeon: 1 measured cityGyeongsangnam-do: 13 measured citiesGangwon-do: 14 measured citiesJeollabuk-do: 13 measured citiesNorth Chungcheong: 7 measured cities#7 Chungju: 29.8 µg/m³#6 Cheongju-si: 50.4 µg/m³#5 Jungpyong: 62.5 µg/m³#4 Koesan: 63.2 µg/m³#3 Chinch'ŏn: 66.3 µg/m³#2 Okcheon: 74.3 µg/m³#1 Yeongdong: 87.8 µg/m³
Each dot is a measured city, coloured by its PM2.5; tap a dot to open the city.
← Yeongdong 87.8 µg/m³ 80 µg/m³5 WHO annual guideline
Every measured city in North Chungcheong, South Korea, one column each, worst on the left and cleanest on the right; height is PM2.5 in µg/m³. Point at it to read a city; tap to open it.
  1. 1Yeongdong 17417.6×
  2. 2Okcheon 16414.9×
  3. 3Chinch'ŏn 15913.3×
  4. 4Koesan 15612.6×
  5. 5Jungpyong 15612.5×
  6. 6Cheongju-si 13810.1×
  7. 7Chungju 906.0×
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

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SmogRank, most polluted cities in North Chungcheong, South Korea, PM2.5, this year to 2 Oct 2026, 08:00 UTC, smogrank.com/kr/region/north-chungcheong?w=year.

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Updated 2026-10-02 08:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.