SmogRank / Countries / South Korea
Most polluted cities in South Korea
0 measured cities ranked by PM2.5, last 30 days.
No city has enough measurements for this window yet.
Good 0–9.0Moderate 9.1+Unhealthy for sensitive groups 35.5+Unhealthy 55.5+Very unhealthy 125.5+Hazardous 225.5+No data
Estimated: cities without a monitor
South Korea cities we can't measure, with model estimates for the last 7 days. Listed by population, not ranked: estimates aren't precise enough to rank. Model estimates from the Copernicus Atmosphere Monitoring Service (CAMS), adjusted to measured cities nearby where there are any. Adjusted, a single day lands within ×1.5 of what a monitor would read about two times in three; unadjusted, it can be off by half or double. Treat them as a guide, not a measurement.
| City | 7-day estimate |
|---|---|
| Seoul estimated | ≈ 25 µg/m³ |
| Busan estimated | ≈ 10 µg/m³ |
| Incheon estimated | ≈ 25 µg/m³ |
| Daegu estimated | ≈ 12 µg/m³ |
| Daejeon estimated | ≈ 21 µg/m³ |
| Gwangju estimated | ≈ 17 µg/m³ |
| Suwon estimated | ≈ 26 µg/m³ |
| Ulsan estimated | ≈ 11 µg/m³ |
| Goyang-si estimated | ≈ 25 µg/m³ |
| Changwon estimated | ≈ 10 µg/m³ |
| Seongnam-si estimated | ≈ 28 µg/m³ |
| Cheongju-si estimated | ≈ 18 µg/m³ |
| Bucheon-si estimated | ≈ 25 µg/m³ |
| Cheonan estimated | ≈ 21 µg/m³ |
| Hwaseong-si estimated | ≈ 23 µg/m³ |
| Jeonju estimated | ≈ 23 µg/m³ |
| Ansan-si estimated | ≈ 23 µg/m³ |
| Anyang-si estimated | ≈ 23 µg/m³ |
| Kimhae estimated | ≈ 10 µg/m³ |
| Pohang estimated | ≈ 11 µg/m³ |
| Jeju City estimated | ≈ 9 µg/m³ |
| Uijeongbu-si estimated | ≈ 28 µg/m³ |
| Masan estimated | ≈ 17 µg/m³ |
| Gumi estimated | ≈ 19 µg/m³ |
| Sejong estimated | ≈ 21 µg/m³ |
| Pyeongtaek estimated | ≈ 21 µg/m³ |
| Yangsan estimated | ≈ 10 µg/m³ |
| Gwangmyeong estimated | ≈ 25 µg/m³ |
| Wŏnju estimated | ≈ 18 µg/m³ |
| Chinju estimated | ≈ 10 µg/m³ |
| Iksan estimated | ≈ 19 µg/m³ |
| Gunpo estimated | ≈ 23 µg/m³ |
| Chuncheon estimated | ≈ 14 µg/m³ |
| Suncheon estimated | ≈ 10 µg/m³ |
| Yeosu estimated | ≈ 10 µg/m³ |
| Mokpo estimated | ≈ 12 µg/m³ |
| Gyeongsan-si estimated | ≈ 11 µg/m³ |
| Gunsan estimated | ≈ 19 µg/m³ |
| Hanam estimated | ≈ 28 µg/m³ |
| Gyeongju estimated | ≈ 10 µg/m³ |
Updated 2026-10-01 07:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.