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

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

25 cities in Gyeonggi-do, South Korea ranked by their average PM2.5 so far (5 of 31 days). Worst: Pubal at 11.0 µg/m³, #388 of 2,246 cities in the world. Cleanest: Yangju at 3.6. 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.

← Pubal 0% 0.75%0

Every city in Gyeonggi-do, South Korea ranked for October 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.

1Pubal
0%
2Yeoju
0%
3Gimpo-si
0%
4Pyeongtaek
0%
4Munsan
0%
4Gwangmyeong
0%
7Guri-si
0%
8Icheon-si
0%
9Uijeongbu-si
0%
9Goyang-si
0%
9Anyang-si
0%
12Hanam
0%
13Namyangju
0%
13Wabu
0%
15Ansan-si
0%
16Suwon
0%
16Osan
0%
18Hwado
0%
19Bucheon-si
0%
19Gwangju
0%
21Seongnam-si
0%
22Yangp'yŏng
0%
22Hwaseong-si
0%
24Anseong
0%
25Yangju
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, October 2026 · All cities in South Korea, October 2026 · Gyeonggi-do now

Use this board

SmogRank, most polluted cities in Gyeonggi-do, South Korea, PM2.5, October 2026 (so far), smogrank.com/kr/region/gyeonggi-do/history/2026-10 (accessed 6 Oct 2026).

Download top 10 (PNG)

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.