SmogRank / Episodes / South Korea
South Korea, 11 to 13 October 2024
For 3 days, from 11 to 13 October 2024, 27 cities in South Korea had PM2.5 at least twice their usual for the time of year. The worst reading was Pubal, Gyeonggi-do, South Korea: 35.1 µg/m³ on 12 October, about 3.2× its usual 10.9.
No cause named We have no fire or smoke records for these days, so we only say what the measurements show.
Cities reached 27 in 1 country
Days 3 11 to 13 October 2024
Worst day 12 October 24 cities counted
Furthest above usual 3.9× Icheon-si
Day by day
Play 12 October 24 cities at twice their usual or more
Koesan Chungju Mungyeong Jungpyong Sangju Okcheon Yeongdong Yecheon Gimcheon Daejeon Wŏnju Kinzan Gumi Yeongju Neietsu Gongju Kunwi Andong Waegwan Yangp'yŏng Gwangju Yŏnmu Hongch’ŏn Jinan-gun Seongnam-si Daegu Suwon Hwawŏn Buyeo Hanam Changsu Wabu Hwado Namsa Jeonju Namyangju Guri-si Cheongsong gun T’aebaek Chuncheon Anyang-si Gapyeong Hayang Gyeongsan-si Hongseong Imsil Eisen Seoul Changnyeong Gwangmyeong Boryeong Uijeongbu-si Nangen Yangju Yanggu Hwacheon Gangneung Seosan Miryang Jeongeup Taesal-li Donghae City Chinju Jumunjin Kurye Gyeongju Naesŏ Yeonil Pohang Munsan Hadong Damyang Changwon Cheorwon Sokcho Koch'ang Kwangyang Kimhae Gwangyang Yangsan Ganghwa-gun Goseong Kosong Jangseong Suncheon Ungsang Gwangju Ulsan Hwasun Masan Tongyeong Beolgyo Yeosu Sinhyeon Busan Gijang Yeonggwang Naju Geoje Boseong Muan Yeongam Jangheung Mokpo Haenam Sinan Nagato Hagi Masuda Hamada Gōtsuchō Ōdachō-ōda Izumo Yae Hiroshima Gion Unnan Miyoshi Higashihiroshima Takehara Tangjin Incheon Gimpo-si Cheonan Wanju Gunsan Yesan Kimje Nonsan Chinch'ŏn Buan Asan Santyoku Goyang-si Cheongju-si Iksan Ansan-si Osan Seonghwan Yeoju Hwaseong-si Bucheon-si Pubal Sejong Pyeongtaek Anseong Icheon-si 8 Oct 9 10 11 12 13 14 15 16 Every measured city in the area, coloured by its PM2.5 that day; a dark ring marks a city at twice its usual or more. Bars: cities counted each day, coloured by their median level. Choose a day or press play; without JavaScript, the days link to that day's world ranking.
How it spread
Hwaseong-si Hwaseong-si, 8 October: 46.2 µg/m³ Hwaseong-si, 9 October: 10.9 µg/m³ Hwaseong-si, 10 October: 14.1 µg/m³ Hwaseong-si, 11 October: 29.8 µg/m³, 3.1× its usual 9.7 Hwaseong-si, 12 October: 25.9 µg/m³, 2.6× its usual 9.9 Hwaseong-si, 13 October: 22.4 µg/m³ Hwaseong-si, 14 October: 11.2 µg/m³ Hwaseong-si, 15 October: 14.6 µg/m³ Hwaseong-si, 16 October: 34.6 µg/m³ Pyeongtaek Pyeongtaek, 8 October: 36.7 µg/m³ Pyeongtaek, 9 October: 8.9 µg/m³ Pyeongtaek, 10 October: 11.2 µg/m³ Pyeongtaek, 11 October: 29.5 µg/m³, 3.1× its usual 9.5 Pyeongtaek, 12 October: 34.8 µg/m³, 3.6× its usual 9.8 Pyeongtaek, 13 October: 19.4 µg/m³ Pyeongtaek, 14 October: 9.2 µg/m³ Pyeongtaek, 15 October: 11.4 µg/m³ Pyeongtaek, 16 October: 20.7 µg/m³ Icheon-si Icheon-si, 8 October: 18.8 µg/m³ Icheon-si, 9 October: 8.6 µg/m³ Icheon-si, 10 October: 13.2 µg/m³ Icheon-si, 11 October: 27.7 µg/m³, 3.3× its usual 8.3 Icheon-si, 12 October: 32.9 µg/m³, 3.9× its usual 8.4 Icheon-si, 13 October: 23.7 µg/m³ Icheon-si, 14 October: 15.3 µg/m³ Icheon-si, 15 October: 14.9 µg/m³ Icheon-si, 16 October: 23.2 µg/m³ Goyang-si Goyang-si, 8 October: 28.0 µg/m³ Goyang-si, 9 October: 8.2 µg/m³ Goyang-si, 10 October: 13.3 µg/m³ Goyang-si, 11 October: 27.1 µg/m³, 2.9× its usual 9.3 Goyang-si, 12 October: 25.2 µg/m³, 2.6× its usual 9.6 Goyang-si, 13 October: 19.0 µg/m³ Goyang-si, 14 October: 11.5 µg/m³ Goyang-si, 15 October: 16.3 µg/m³ Goyang-si, 16 October: 28.0 µg/m³ Gimpo-si Gimpo-si, 8 October: 30.2 µg/m³ Gimpo-si, 9 October: 10.0 µg/m³ Gimpo-si, 10 October: 14.3 µg/m³ Gimpo-si, 11 October: 26.9 µg/m³, 2.4× its usual 11.4 Gimpo-si, 12 October: 25.5 µg/m³, 2.2× its usual 11.6 Gimpo-si, 13 October: 21.1 µg/m³ Gimpo-si, 14 October: 12.0 µg/m³ Gimpo-si, 15 October: 18.8 µg/m³ Gimpo-si, 16 October: 30.3 µg/m³ Seonghwan Seonghwan, 8 October: 41.0 µg/m³ Seonghwan, 9 October: 13.8 µg/m³ Seonghwan, 10 October: 11.7 µg/m³ Seonghwan, 11 October: 26.8 µg/m³, 2.3× its usual 11.5 Seonghwan, 12 October: 34.6 µg/m³, 3.0× its usual 11.6 Seonghwan, 13 October: 20.2 µg/m³ Seonghwan, 14 October: 13.5 µg/m³ Seonghwan, 15 October: 12.5 µg/m³ Seonghwan, 16 October: 28.1 µg/m³ Pubal Pubal, 8 October: 30.5 µg/m³ Pubal, 9 October: 13.9 µg/m³ Pubal, 10 October: 16.0 µg/m³ Pubal, 11 October: 26.4 µg/m³, 2.4× its usual 10.8 Pubal, 12 October: 35.1 µg/m³, 3.2× its usual 10.9 Pubal, 13 October: 27.5 µg/m³, 2.4× its usual 11.4 Pubal, 14 October: 18.1 µg/m³ Pubal, 15 October: 12.8 µg/m³ Pubal, 16 October: 31.3 µg/m³ Ansan-si Ansan-si, 8 October: 38.4 µg/m³ Ansan-si, 9 October: 7.1 µg/m³ Ansan-si, 10 October: 10.2 µg/m³ Ansan-si, 11 October: 26.0 µg/m³, 3.0× its usual 8.6 Ansan-si, 12 October: 21.4 µg/m³ Ansan-si, 13 October: 17.7 µg/m³ Ansan-si, 14 October: 8.9 µg/m³ Ansan-si, 15 October: 14.7 µg/m³ Ansan-si, 16 October: 34.3 µg/m³ Incheon Incheon, 8 October: 38.4 µg/m³ Incheon, 9 October: 8.9 µg/m³ Incheon, 10 October: 12.6 µg/m³ Incheon, 11 October: 25.4 µg/m³, 2.4× its usual 10.5 Incheon, 12 October: 22.7 µg/m³ Incheon, 13 October: 19.8 µg/m³ Incheon, 14 October: 10.3 µg/m³ Incheon, 15 October: 15.6 µg/m³ Incheon, 16 October: 34.1 µg/m³ Tangjin Tangjin, 8 October: 44.7 µg/m³ Tangjin, 9 October: 21.8 µg/m³ Tangjin, 10 October: 14.2 µg/m³ Tangjin, 11 October: 25.3 µg/m³, 2.1× its usual 11.8 Tangjin, 12 October: 25.2 µg/m³, 2.1× its usual 11.9 Tangjin, 13 October: 21.5 µg/m³ Tangjin, 14 October: 12.8 µg/m³ Tangjin, 15 October: 14.7 µg/m³ Tangjin, 16 October: 33.3 µg/m³ Osan Osan, 8 October: 30.4 µg/m³ Osan, 9 October: 7.3 µg/m³ Osan, 10 October: 10.7 µg/m³ Osan, 11 October: 25.2 µg/m³, 3.2× its usual 8.0 Osan, 12 October: 26.2 µg/m³, 3.0× its usual 8.6 Osan, 13 October: 18.2 µg/m³ Osan, 14 October: 8.3 µg/m³ Osan, 15 October: 11.4 µg/m³ Osan, 16 October: 23.1 µg/m³ Bucheon-si Bucheon-si, 8 October: 31.7 µg/m³ Bucheon-si, 9 October: 6.9 µg/m³ Bucheon-si, 10 October: 10.9 µg/m³ Bucheon-si, 11 October: 25.0 µg/m³, 3.2× its usual 7.9 Bucheon-si, 12 October: 22.8 µg/m³ Bucheon-si, 13 October: 17.5 µg/m³ Bucheon-si, 14 October: 9.1 µg/m³ Bucheon-si, 15 October: 13.7 µg/m³ Bucheon-si, 16 October: 30.8 µg/m³ Kimje Kimje, 8 October: 33.1 µg/m³ Kimje, 9 October: 24.5 µg/m³ Kimje, 10 October: 14.7 µg/m³ Kimje, 11 October: 21.0 µg/m³ Kimje, 12 October: 32.3 µg/m³, 2.6× its usual 12.5 Kimje, 13 October: 27.3 µg/m³ Kimje, 14 October: 16.3 µg/m³ Kimje, 15 October: 11.4 µg/m³ Kimje, 16 October: 29.8 µg/m³ Iksan Iksan, 8 October: 33.4 µg/m³ Iksan, 9 October: 26.0 µg/m³ Iksan, 10 October: 16.6 µg/m³ Iksan, 11 October: 21.9 µg/m³ Iksan, 12 October: 31.8 µg/m³, 2.9× its usual 11.0 Iksan, 13 October: 31.8 µg/m³, 2.8× its usual 11.4 Iksan, 14 October: 18.3 µg/m³ Iksan, 15 October: 14.6 µg/m³ Iksan, 16 October: 29.8 µg/m³ Yeoju Yeoju, 8 October: 16.5 µg/m³ Yeoju, 9 October: 7.9 µg/m³ Yeoju, 10 October: 11.1 µg/m³ Yeoju, 11 October: 20.5 µg/m³ Yeoju, 12 October: 29.0 µg/m³, 3.1× its usual 9.3 Yeoju, 13 October: 19.5 µg/m³ Yeoju, 14 October: 13.5 µg/m³ Yeoju, 15 October: 15.5 µg/m³ Yeoju, 16 October: 22.6 µg/m³ Yesan Yesan, 8 October: 40.7 µg/m³ Yesan, 9 October: 24.2 µg/m³ Yesan, 10 October: 13.4 µg/m³ Yesan, 11 October: 23.8 µg/m³ Yesan, 12 October: 28.9 µg/m³, 2.6× its usual 11.3 Yesan, 13 October: 20.0 µg/m³ Yesan, 14 October: 15.6 µg/m³ Yesan, 15 October: 9.2 µg/m³ Yesan, 16 October: 31.9 µg/m³ Asan Asan, 8 October: 44.5 µg/m³ Asan, 9 October: 21.0 µg/m³ Asan, 10 October: 8.2 µg/m³ Asan, 11 October: 24.2 µg/m³ Asan, 12 October: 28.7 µg/m³, 2.8× its usual 10.2 Asan, 13 October: 18.4 µg/m³ Asan, 14 October: 6.8 µg/m³ Asan, 15 October: 5.8 µg/m³ Asan, 16 October: 30.7 µg/m³ Buan Buan, 8 October: 31.3 µg/m³ Buan, 9 October: 24.2 µg/m³ Buan, 10 October: 15.2 µg/m³ Buan, 11 October: 18.9 µg/m³ Buan, 12 October: 28.6 µg/m³, 2.6× its usual 11.1 Buan, 13 October: 31.1 µg/m³, 2.7× its usual 11.5 Buan, 14 October: 20.5 µg/m³ Buan, 15 October: 10.5 µg/m³ Buan, 16 October: 22.7 µg/m³ Wanju Wanju, 8 October: 33.0 µg/m³ Wanju, 9 October: 18.7 µg/m³ Wanju, 10 October: 13.0 µg/m³ Wanju, 11 October: 17.2 µg/m³ Wanju, 12 October: 28.1 µg/m³, 2.5× its usual 11.4 Wanju, 13 October: 21.3 µg/m³ Wanju, 14 October: 13.7 µg/m³ Wanju, 15 October: 15.5 µg/m³ Wanju, 16 October: 29.6 µg/m³ Gunsan Gunsan, 8 October: 37.0 µg/m³ Gunsan, 9 October: 23.5 µg/m³ Gunsan, 10 October: 13.8 µg/m³ Gunsan, 11 October: 21.1 µg/m³ Gunsan, 12 October: 27.9 µg/m³, 2.6× its usual 10.6 Gunsan, 13 October: 26.6 µg/m³, 2.4× its usual 10.9 Gunsan, 14 October: 14.9 µg/m³ Gunsan, 15 October: 9.6 µg/m³ Gunsan, 16 October: 29.5 µg/m³ Cheongju-si Cheongju-si, 8 October: 34.6 µg/m³ Cheongju-si, 9 October: 11.4 µg/m³ Cheongju-si, 10 October: 7.4 µg/m³ Cheongju-si, 11 October: 17.3 µg/m³ Cheongju-si, 12 October: 27.5 µg/m³, 2.9× its usual 9.4 Cheongju-si, 13 October: 18.6 µg/m³ Cheongju-si, 14 October: 10.5 µg/m³ Cheongju-si, 15 October: 8.1 µg/m³ Cheongju-si, 16 October: 22.5 µg/m³ Chinch'ŏn Chinch'ŏn, 8 October: 35.0 µg/m³ Chinch'ŏn, 9 October: 15.0 µg/m³ Chinch'ŏn, 10 October: 11.6 µg/m³ Chinch'ŏn, 11 October: 19.0 µg/m³ Chinch'ŏn, 12 October: 27.4 µg/m³, 2.7× its usual 10.0 Chinch'ŏn, 13 October: 19.0 µg/m³ Chinch'ŏn, 14 October: 17.0 µg/m³ Chinch'ŏn, 15 October: 13.4 µg/m³ Chinch'ŏn, 16 October: 24.2 µg/m³ Sejong Sejong, 8 October: 21.9 µg/m³ Sejong, 9 October: 10.8 µg/m³ Sejong, 10 October: 7.1 µg/m³ Sejong, 11 October: 17.4 µg/m³ Sejong, 12 October: 27.3 µg/m³, 3.3× its usual 8.4 Sejong, 13 October: 18.6 µg/m³ Sejong, 14 October: 12.5 µg/m³ Sejong, 15 October: 7.9 µg/m³ Sejong, 16 October: 17.7 µg/m³ Nonsan Nonsan, 8 October: 28.7 µg/m³ Nonsan, 9 October: 18.5 µg/m³ Nonsan, 10 October: 11.0 µg/m³ Nonsan, 11 October: 19.7 µg/m³ Nonsan, 12 October: 27.0 µg/m³, 2.7× its usual 9.9 Nonsan, 13 October: 25.7 µg/m³, 2.4× its usual 10.7 Nonsan, 14 October: 12.6 µg/m³ Nonsan, 15 October: 7.1 µg/m³ Nonsan, 16 October: 19.9 µg/m³ Anseong Anseong, 8 October: 25.6 µg/m³ Anseong, 9 October: 5.9 µg/m³ Anseong, 10 October: 5.7 µg/m³ Anseong, 11 October: 17.0 µg/m³ Anseong, 12 October: 26.5 µg/m³, 3.7× its usual 7.2 Anseong, 13 October: 15.9 µg/m³ Anseong, 14 October: 7.2 µg/m³ Anseong, 15 October: 7.1 µg/m³ Anseong, 16 October: 14.0 µg/m³ Cheonan Cheonan, 8 October: 32.0 µg/m³ Cheonan, 9 October: 15.9 µg/m³ Cheonan, 10 October: 9.6 µg/m³ Cheonan, 11 October: 21.4 µg/m³ Cheonan, 12 October: 25.8 µg/m³, 2.5× its usual 10.2 Cheonan, 13 October: 16.8 µg/m³ Cheonan, 14 October: 11.1 µg/m³ Cheonan, 15 October: 8.0 µg/m³ Cheonan, 16 October: 21.4 µg/m³ Santyoku Santyoku, 8 October: 14.9 µg/m³ Santyoku, 9 October: 13.1 µg/m³ Santyoku, 10 October: 10.0 µg/m³ Santyoku, 11 October: 12.7 µg/m³ Santyoku, 12 October: 25.0 µg/m³, 2.9× its usual 8.6 Santyoku, 13 October: 17.6 µg/m³ Santyoku, 14 October: 12.2 µg/m³ Santyoku, 15 October: 12.3 µg/m³ Santyoku, 16 October: 15.5 µg/m³ 8 Oct 9 10 11 12 13 14 15 16 Every counted city, in the order the episode reached them, 3 days before to 3 after. Each square is a day, coloured by that day's PM2.5; outlined: at twice the city's usual or more. Good 0–50
Moderate 51–100
Sensitive groups 101–150
Unhealthy 151–200
Very unhealthy 201–300
Hazardous 301+
Every city it reached
City Days Highest Usual Above usual
Icheon-si Gyeonggi-do, South Korea 2 12 October 8.4 3.9× Anseong Gyeonggi-do, South Korea 1 12 October 7.2 3.7× Pyeongtaek Gyeonggi-do, South Korea 2 12 October 9.8 3.6× Sejong Sejong-si, South Korea 1 12 October 8.4 3.3× Pubal Gyeonggi-do, South Korea 3 12 October 10.9 3.2× Bucheon-si Gyeonggi-do, South Korea 1 11 October 7.9 3.2× Hwaseong-si Gyeonggi-do, South Korea 2 11 October 9.7 3.1× Yeoju Gyeonggi-do, South Korea 1 12 October 9.3 3.1× Seonghwan Chungcheongnam-do, South Korea 2 12 October 11.6 3.0× Osan Gyeonggi-do, South Korea 2 12 October 8.6 3.0× Ansan-si Gyeonggi-do, South Korea 1 11 October 8.6 3.0× Iksan Jeollabuk-do, South Korea 2 12 October 11.0 2.9× Cheongju-si North Chungcheong, South Korea 1 12 October 9.4 2.9× Goyang-si Gyeonggi-do, South Korea 2 11 October 9.3 2.9× Santyoku Gangwon-do, South Korea 1 12 October 8.6 2.9× Asan Chungcheongnam-do, South Korea 1 12 October 10.2 2.8× Buan Jeollabuk-do, South Korea 2 13 October 11.5 2.7× Chinch'ŏn North Chungcheong, South Korea 1 12 October 10.0 2.7× Nonsan Chungcheongnam-do, South Korea 2 12 October 9.9 2.7× Kimje Jeollabuk-do, South Korea 1 12 October 12.5 2.6× Yesan Chungcheongnam-do, South Korea 1 12 October 11.3 2.6× Gunsan Jeollabuk-do, South Korea 2 12 October 10.6 2.6× Wanju Jeollabuk-do, South Korea 1 12 October 11.4 2.5× Cheonan Chungcheongnam-do, South Korea 1 12 October 10.2 2.5× Gimpo-si Gyeonggi-do, South Korea 2 11 October 11.4 2.4× Incheon Incheon, South Korea 1 11 October 10.5 2.4× Tangjin Chungcheongnam-do, South Korea 2 11 October 11.8 2.1×
Daily means in µg/m³, over the days each city counted in this episode. Highest: its highest of those days. Usual: the city's median for the time of year of that day (its days within 21 days of the date, every year, leaving out the week around it). Above usual: its highest day against that, with a usual under 5 µg/m³ taken as 5.
Against other episodes in South Korea
Number 37 of 63 episodes in South Korea since our records began, by cities reached.
Japan and South Korea, March 2025 454 Japan and South Korea, March 2026 305 Japan and South Korea, January 2025 274 Japan and South Korea, February and March 2025 192 South Korea and Japan, January 2026 169 South Korea and Japan, 10 to 15 February 2026 147 South Korea, 14 to 16 February 2025 132 South Korea and Japan, November 2025 128 South Korea, February 2026 121 South Korea, 7 December 2025 113 South Korea, 13 to 14 January 2025 113 South Korea, 16 to 20 December 2025 107 South Korea, 11 to 13 October 2024 27 Bars: cities reached; colour: the level of the episode's highest daily reading. All 63 .
Use this page SmogRank, South Korea, 11 to 13 October 2024: 27 cities with PM2.5 at twice their usual or more, 11 to 13 October 2024, smogrank.com/episodes/2024-10-11-south-korea (accessed 4 October 2026).
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You're welcome to reuse a single chart, image or figure with this citation and a link. Terms .
An episode is a run of days when many cities close to each other (four or more within 350 km on a day, 8 or more in all) each had a daily PM2.5 mean of at least 25 µg/m³ and at least 2 times their usual for that time of year. Found in our own measurements, not picked by hand. How we find episodes . Values are each city's daily mean of its own monitors; causes are the usual kinds for a pattern like this, not a confirmed source.
