SmogRank / Episodes / South Korea
Gyeonggi-do and Chungcheongnam-do, South Korea, November 2024
For 2 days, from 11 to 12 November 2024, 24 cities in South Korea had PM2.5 at least twice their usual for the time of year. The worst reading was Seonghwan, Chungcheongnam-do, South Korea: 47.8 µg/m³ on 11 November, about 2.2× its usual 21.8.
No cause named We have no fire or smoke records for these days, so we only say what the measurements show.
Cities reached 24 in 1 country
Days 2 11 to 12 November 2024
Worst day 11 November 19 cities counted
Furthest above usual 2.4× Boryeong
Day by day
Play 11 November 19 cities at twice their usual or more
Asan Tangjin Hongseong Sejong Gongju Seosan Taesal-li Cheongju-si Jungpyong Nonsan Daejeon Seongnam-si Icheon-si Pubal Seoul Hanam Guri-si Okcheon Wabu Yeoju Koesan Yangp'yŏng Namyangju Iksan Gunsan Kinzan Hwado Uijeongbu-si Chungju Wanju Yangju Jeonju Kimje Yeongdong Wŏnju Buan Gapyeong Jeongeup Imsil Mungyeong Sangju Hongch’ŏn Changsu Chuncheon Gimcheon Cheorwon Koch'ang Nangen Hwacheon Yecheon Damyang Jangseong Gumi Neietsu Yeonggwang Yanggu Waegwan Yeongju Gwangju Kurye Masan Kunwi Hwasun Andong Naju Hwawŏn Daegu Muan Hadong Suncheon Kwangyang Chinju Changnyeong Beolgyo Gwangyang Gyeongsan-si Yeongam T’aebaek Boseong Hayang Mokpo Gangneung Cheongsong gun Sokcho Jangheung Jumunjin Eisen Kosong Sinan Yeosu Naesŏ Miryang Donghae City Haenam Santyoku Goseong Changwon Gyeongju Tongyeong Kimhae Yeonil Pohang Yangsan Sinhyeon Ungsang Geoje Ulsan Busan Gijang Nagato Hagi Yŏnmu Chinch'ŏn Namsa Goyang-si Suwon Yesan Gwangju Gimpo-si Boryeong Jinan-gun Cheonan Incheon Ganghwa-gun Munsan Osan Seonghwan Gwangmyeong Ansan-si Anyang-si Hwaseong-si Bucheon-si Buyeo Anseong Pyeongtaek 8 Nov 9 10 11 12 13 14 15 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
Seonghwan Seonghwan, 8 November: 45.6 µg/m³, 2.1× usual Seonghwan, 9 November: 43.8 µg/m³, 2.0× usual Seonghwan, 10 November: 24.5 µg/m³, 1.1× usual Seonghwan, 11 November: 47.8 µg/m³, 2.2× usual Seonghwan, 12 November: 36.6 µg/m³, 1.7× usual Seonghwan, 13 November: 33.6 µg/m³, 1.5× usual Seonghwan, 14 November: 23.6 µg/m³, 1.1× usual Seonghwan, 15 November: 18.9 µg/m³, 0.9× usual Boryeong Boryeong, 8 November: 43.2 µg/m³, 2.7× usual Boryeong, 9 November: 41.3 µg/m³, 2.6× usual Boryeong, 10 November: 29.9 µg/m³, 1.9× usual Boryeong, 11 November: 32.6 µg/m³, 2.1× usual Boryeong, 12 November: 23.0 µg/m³, 1.5× usual Boryeong, 13 November: 25.0 µg/m³, 1.6× usual Boryeong, 14 November: 21.3 µg/m³, 1.3× usual Boryeong, 15 November: 11.5 µg/m³, 0.7× usual Yesan Yesan, 8 November: 41.7 µg/m³, 2.1× usual Yesan, 9 November: 40.3 µg/m³, 2.1× usual Yesan, 10 November: 27.4 µg/m³, 1.4× usual Yesan, 11 November: 39.4 µg/m³, 2.0× usual Yesan, 12 November: 31.8 µg/m³, 1.6× usual Yesan, 13 November: 29.5 µg/m³, 1.5× usual Yesan, 14 November: 29.4 µg/m³, 1.5× usual Yesan, 15 November: 18.5 µg/m³, 0.9× usual Cheonan Cheonan, 8 November: 37.0 µg/m³, 2.2× usual Cheonan, 9 November: 34.2 µg/m³, 2.0× usual Cheonan, 10 November: 16.7 µg/m³, 1.0× usual Cheonan, 11 November: 37.5 µg/m³, 2.2× usual Cheonan, 12 November: 32.5 µg/m³, 1.9× usual Cheonan, 13 November: 23.0 µg/m³, 1.3× usual Cheonan, 14 November: 17.0 µg/m³, 1.0× usual Cheonan, 15 November: 14.5 µg/m³, 0.8× usual Pyeongtaek Pyeongtaek, 8 November: 30.8 µg/m³, 1.7× usual Pyeongtaek, 9 November: 23.0 µg/m³, 1.3× usual Pyeongtaek, 10 November: 21.1 µg/m³, 1.2× usual Pyeongtaek, 11 November: 44.4 µg/m³, 2.4× usual Pyeongtaek, 12 November: 43.0 µg/m³, 2.4× usual Pyeongtaek, 13 November: 30.3 µg/m³, 1.7× usual Pyeongtaek, 14 November: 18.3 µg/m³, 1.0× usual Pyeongtaek, 15 November: 14.9 µg/m³, 0.8× usual Hwaseong-si Hwaseong-si, 8 November: 30.8 µg/m³, 1.7× usual Hwaseong-si, 9 November: 25.1 µg/m³, 1.4× usual Hwaseong-si, 10 November: 17.2 µg/m³, 1.0× usual Hwaseong-si, 11 November: 41.1 µg/m³, 2.3× usual Hwaseong-si, 12 November: 23.3 µg/m³, 1.3× usual Hwaseong-si, 13 November: 31.3 µg/m³, 1.7× usual Hwaseong-si, 14 November: 24.7 µg/m³, 1.4× usual Hwaseong-si, 15 November: 16.8 µg/m³, 0.9× usual Buyeo Buyeo, 8 November: 29.0 µg/m³, 2.1× usual Buyeo, 9 November: 28.0 µg/m³, 2.0× usual Buyeo, 10 November: 20.3 µg/m³, 1.5× usual Buyeo, 11 November: 28.0 µg/m³, 2.0× usual Buyeo, 12 November: 31.4 µg/m³, 2.3× usual Buyeo, 13 November: 22.5 µg/m³, 1.6× usual Buyeo, 14 November: 22.6 µg/m³, 1.6× usual Buyeo, 15 November: 14.1 µg/m³, 1.0× usual Anseong Anseong, 8 November: 25.6 µg/m³, 1.6× usual Anseong, 9 November: 20.0 µg/m³, 1.2× usual Anseong, 10 November: 16.5 µg/m³, 1.0× usual Anseong, 11 November: 38.7 µg/m³, 2.4× usual Anseong, 12 November: 39.5 µg/m³, 2.4× usual Anseong, 13 November: 21.4 µg/m³, 1.3× usual Anseong, 14 November: 14.8 µg/m³, 0.9× usual Anseong, 15 November: 13.2 µg/m³, 0.8× usual Ganghwa-gun Ganghwa-gun, 8 November: 24.2 µg/m³, 1.4× usual Ganghwa-gun, 9 November: 22.1 µg/m³, 1.2× usual Ganghwa-gun, 10 November: 25.5 µg/m³, 1.4× usual Ganghwa-gun, 11 November: 38.4 µg/m³, 2.2× usual Ganghwa-gun, 12 November: 21.6 µg/m³, 1.2× usual Ganghwa-gun, 13 November: 26.4 µg/m³, 1.5× usual Ganghwa-gun, 14 November: 32.2 µg/m³, 1.8× usual Ganghwa-gun, 15 November: 24.5 µg/m³, 1.4× usual Ansan-si Ansan-si, 8 November: 25.0 µg/m³, 1.5× usual Ansan-si, 9 November: 20.0 µg/m³, 1.2× usual Ansan-si, 10 November: 17.2 µg/m³, 1.0× usual Ansan-si, 11 November: 37.8 µg/m³, 2.3× usual Ansan-si, 12 November: 27.0 µg/m³, 1.6× usual Ansan-si, 13 November: 24.9 µg/m³, 1.5× usual Ansan-si, 14 November: 19.3 µg/m³, 1.2× usual Ansan-si, 15 November: 15.7 µg/m³, 1.0× usual Gimpo-si Gimpo-si, 8 November: 23.4 µg/m³, 1.3× usual Gimpo-si, 9 November: 21.2 µg/m³, 1.2× usual Gimpo-si, 10 November: 22.4 µg/m³, 1.3× usual Gimpo-si, 11 November: 36.9 µg/m³, 2.1× usual Gimpo-si, 12 November: 22.9 µg/m³, 1.3× usual Gimpo-si, 13 November: 28.6 µg/m³, 1.6× usual Gimpo-si, 14 November: 25.4 µg/m³, 1.4× usual Gimpo-si, 15 November: 20.2 µg/m³, 1.1× usual Incheon Incheon, 8 November: 24.1 µg/m³, 1.4× usual Incheon, 9 November: 22.8 µg/m³, 1.4× usual Incheon, 10 November: 19.2 µg/m³, 1.1× usual Incheon, 11 November: 36.6 µg/m³, 2.2× usual Incheon, 12 November: 20.0 µg/m³, 1.2× usual Incheon, 13 November: 30.7 µg/m³, 1.8× usual Incheon, 14 November: 23.4 µg/m³, 1.4× usual Incheon, 15 November: 16.5 µg/m³, 1.0× usual Bucheon-si Bucheon-si, 8 November: 22.6 µg/m³, 1.4× usual Bucheon-si, 9 November: 22.1 µg/m³, 1.4× usual Bucheon-si, 10 November: 19.3 µg/m³, 1.2× usual Bucheon-si, 11 November: 35.8 µg/m³, 2.3× usual Bucheon-si, 12 November: 21.8 µg/m³, 1.4× usual Bucheon-si, 13 November: 27.1 µg/m³, 1.7× usual Bucheon-si, 14 November: 21.2 µg/m³, 1.3× usual Bucheon-si, 15 November: 15.3 µg/m³, 1.0× usual Anyang-si Anyang-si, 8 November: 21.8 µg/m³, 1.4× usual Anyang-si, 9 November: 18.5 µg/m³, 1.2× usual Anyang-si, 10 November: 17.5 µg/m³, 1.1× usual Anyang-si, 11 November: 35.7 µg/m³, 2.3× usual Anyang-si, 12 November: 25.4 µg/m³, 1.6× usual Anyang-si, 13 November: 21.8 µg/m³, 1.4× usual Anyang-si, 14 November: 17.6 µg/m³, 1.1× usual Anyang-si, 15 November: 16.0 µg/m³, 1.0× usual Goyang-si Goyang-si, 8 November: 22.2 µg/m³, 1.3× usual Goyang-si, 9 November: 21.2 µg/m³, 1.2× usual Goyang-si, 10 November: 20.5 µg/m³, 1.2× usual Goyang-si, 11 November: 35.3 µg/m³, 2.0× usual Goyang-si, 12 November: 28.3 µg/m³, 1.6× usual Goyang-si, 13 November: 27.6 µg/m³, 1.6× usual Goyang-si, 14 November: 22.0 µg/m³, 1.3× usual Goyang-si, 15 November: 19.6 µg/m³, 1.1× usual Gwangmyeong Gwangmyeong, 8 November: 22.9 µg/m³, 1.5× usual Gwangmyeong, 9 November: 20.5 µg/m³, 1.4× usual Gwangmyeong, 10 November: 15.9 µg/m³, 1.1× usual Gwangmyeong, 11 November: 34.1 µg/m³, 2.3× usual Gwangmyeong, 12 November: 24.3 µg/m³, 1.6× usual Gwangmyeong, 13 November: 23.8 µg/m³, 1.6× usual Gwangmyeong, 14 November: 18.0 µg/m³, 1.2× usual Gwangmyeong, 15 November: 16.5 µg/m³, 1.1× usual Osan Osan, 8 November: 22.9 µg/m³, 1.4× usual Osan, 9 November: 18.4 µg/m³, 1.2× usual Osan, 10 November: 15.5 µg/m³, 1.0× usual Osan, 11 November: 34.0 µg/m³, 2.1× usual Osan, 12 November: 35.3 µg/m³, 2.2× usual Osan, 13 November: 23.0 µg/m³, 1.4× usual Osan, 14 November: 17.3 µg/m³, 1.1× usual Osan, 15 November: 14.5 µg/m³, 0.9× usual Munsan Munsan, 8 November: 19.3 µg/m³, 1.3× usual Munsan, 9 November: 18.9 µg/m³, 1.2× usual Munsan, 10 November: 19.0 µg/m³, 1.2× usual Munsan, 11 November: 33.2 µg/m³, 2.2× usual Munsan, 12 November: 24.8 µg/m³, 1.6× usual Munsan, 13 November: 20.0 µg/m³, 1.3× usual Munsan, 14 November: 24.3 µg/m³, 1.6× usual Munsan, 15 November: 21.6 µg/m³, 1.4× usual Suwon Suwon, 8 November: 22.6 µg/m³, 1.4× usual Suwon, 9 November: 18.8 µg/m³, 1.1× usual Suwon, 10 November: 16.4 µg/m³, 1.0× usual Suwon, 11 November: 33.0 µg/m³, 2.0× usual Suwon, 12 November: 28.1 µg/m³, 1.7× usual Suwon, 13 November: 21.0 µg/m³, 1.3× usual Suwon, 14 November: 19.0 µg/m³, 1.2× usual Suwon, 15 November: 16.3 µg/m³, 1.0× usual Chinch'ŏn Chinch'ŏn, 8 November: 23.5 µg/m³, 1.2× usual Chinch'ŏn, 9 November: 24.6 µg/m³, 1.3× usual Chinch'ŏn, 10 November: 20.6 µg/m³, 1.1× usual Chinch'ŏn, 11 November: 30.5 µg/m³, 1.6× usual Chinch'ŏn, 12 November: 38.4 µg/m³, 2.0× usual Chinch'ŏn, 13 November: 26.9 µg/m³, 1.4× usual Chinch'ŏn, 14 November: 18.7 µg/m³, 1.0× usual Chinch'ŏn, 15 November: 17.6 µg/m³, 0.9× usual Yŏnmu Yŏnmu, 8 November: 22.5 µg/m³, 1.3× usual Yŏnmu, 9 November: 28.9 µg/m³, 1.7× usual Yŏnmu, 10 November: 16.2 µg/m³, 1.0× usual Yŏnmu, 11 November: 26.8 µg/m³, 1.6× usual Yŏnmu, 12 November: 34.0 µg/m³, 2.0× usual Yŏnmu, 13 November: 27.1 µg/m³, 1.6× usual Yŏnmu, 14 November: 22.3 µg/m³, 1.3× usual Yŏnmu, 15 November: 14.9 µg/m³, 0.9× usual Gwangju Gwangju, 8 November: 17.7 µg/m³, 1.1× usual Gwangju, 9 November: 16.1 µg/m³, 1.0× usual Gwangju, 10 November: 15.1 µg/m³, 1.0× usual Gwangju, 11 November: 23.0 µg/m³, 1.5× usual Gwangju, 12 November: 33.5 µg/m³, 2.1× usual Gwangju, 13 November: 19.9 µg/m³, 1.3× usual Gwangju, 14 November: 19.0 µg/m³, 1.2× usual Gwangju, 15 November: 15.9 µg/m³, 1.0× usual Namsa Namsa, 8 November: 24.7 µg/m³, 1.6× usual Namsa, 9 November: 25.2 µg/m³, 1.6× usual Namsa, 10 November: 14.5 µg/m³, 0.9× usual Namsa, 11 November: 27.8 µg/m³, 1.8× usual Namsa, 12 November: 30.9 µg/m³, 2.0× usual Namsa, 13 November: 23.6 µg/m³, 1.5× usual Namsa, 14 November: 18.4 µg/m³, 1.2× usual Namsa, 15 November: 14.8 µg/m³, 1.0× usual Jinan-gun Jinan-gun, 8 November: 14.0 µg/m³, 1.1× usual Jinan-gun, 9 November: 12.0 µg/m³, 0.9× usual Jinan-gun, 10 November: 8.6 µg/m³, 0.6× usual Jinan-gun, 11 November: 17.8 µg/m³, 1.3× usual Jinan-gun, 12 November: 28.6 µg/m³, 2.2× usual Jinan-gun, 13 November: 16.9 µg/m³, 1.3× usual Jinan-gun, 14 November: 12.6 µg/m³, 0.9× usual Jinan-gun, 15 November: 10.2 µg/m³, 0.8× usual 8 Nov 9 10 11 12 13 14 15 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
Boryeong Chungcheongnam-do, South Korea 1 8 November 15.8 2.7× Pyeongtaek Gyeonggi-do, South Korea 2 11 November 18.2 2.4× Anseong Gyeonggi-do, South Korea 2 12 November 16.3 2.4× Ansan-si Gyeonggi-do, South Korea 1 11 November 16.4 2.3× Anyang-si Gyeonggi-do, South Korea 1 11 November 15.5 2.3× Buyeo Chungcheongnam-do, South Korea 2 12 November 13.7 2.3× Hwaseong-si Gyeonggi-do, South Korea 1 11 November 18.1 2.3× Bucheon-si Gyeonggi-do, South Korea 1 11 November 15.8 2.3× Gwangmyeong Gyeonggi-do, South Korea 1 11 November 15.1 2.3× Osan Gyeonggi-do, South Korea 2 12 November 15.9 2.2× Seonghwan Chungcheongnam-do, South Korea 1 11 November 21.8 2.2× Cheonan Chungcheongnam-do, South Korea 1 11 November 17.2 2.2× Incheon Incheon, South Korea 1 11 November 16.8 2.2× Ganghwa-gun Incheon, South Korea 1 11 November 17.8 2.2× Munsan Gyeonggi-do, South Korea 1 11 November 15.4 2.2× Jinan-gun Jeollabuk-do, South Korea 1 12 November 13.3 2.2× Yesan Chungcheongnam-do, South Korea 1 8 November 19.5 2.1× Gwangju Gyeonggi-do, South Korea 1 12 November 15.8 2.1× Gimpo-si Gyeonggi-do, South Korea 1 11 November 17.8 2.1× Namsa Jeollabuk-do, South Korea 1 12 November 15.3 2.0× Goyang-si Gyeonggi-do, South Korea 1 11 November 17.5 2.0× Chinch'ŏn North Chungcheong, South Korea 1 12 November 19.1 2.0× Suwon Gyeonggi-do, South Korea 1 11 November 16.5 2.0× Yŏnmu Chungcheongnam-do, South Korea 1 12 November 17.0 2.0×
Daily means in µg/m³. Usual: the city's median for this time of year (its days within 21 days of the date, every year, leaving out the week around it). Above usual: its highest day against that.
Against other episodes in South Korea
Number 43 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, February 2026 147 South Korea, February 2025 132 South Korea, November 2025 128 South Korea, February 2026 121 South Korea, December 2025 113 South Korea, January 2025 113 South Korea, December 2025 107 Gyeonggi-do and Chungcheongnam-do, South Korea, November 2024 24 Bars: cities reached; colour: the level of the episode's highest daily reading. All 63 .
Use this page SmogRank, Gyeonggi-do and Chungcheongnam-do, South Korea, November 2024: 24 cities with PM2.5 at twice their usual or more, 11 to 12 November 2024, smogrank.com/episodes/2024-11-gyeonggi-do-and-chungcheongnam-do-south-korea (accessed 3 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.
