SmogRank / Episodes / South Korea
South Korea, November 2025
For 2 days, from 13 to 14 November 2025, 39 cities in South Korea had PM2.5 at least twice their usual for the time of year. The worst reading was Wanju, Jeollabuk-do, South Korea: 41.8 µg/m³ on 13 November, about 2.8× its usual 14.9.
No cause named We have no fire or smoke records for these days, so we only say what the measurements show.
Cities reached 39 in 1 country
Days 2 13 to 14 November 2025
Worst day 13 November 32 cities counted
Furthest above usual 2.8× Gijang
Day by day
Play 13 November 32 cities at twice their usual or more
Gimcheon Sangju Gumi Mungyeong Daejeon Waegwan Koesan Jinan-gun Kunwi Changsu Yecheon Sejong Chinch'ŏn Gongju Nonsan Andong Changnyeong Gyeongsan-si Yeongju Cheonan Hayang Buyeo Seonghwan Chinju Asan Kimje Kurye Yeoju Neietsu Miryang Wŏnju Pubal Yesan Icheon-si Naesŏ Hadong Cheongsong gun Changwon Kwangyang Damyang Hongseong Gwangyang Boryeong Goseong Yangp'yŏng Suncheon Gwangju Suwon Tangjin Yeonil T’aebaek Gwangju Hwaseong-si Hongch’ŏn Tongyeong Hwasun Pohang Yeosu Beolgyo Hanam Anyang-si Wabu Sinhyeon Ansan-si Seosan Namyangju Guri-si Gwangmyeong Geoje Taesal-li Seoul Gapyeong Boseong Yeonggwang Naju Bucheon-si Incheon Uijeongbu-si Santyoku Goyang-si Donghae City Gangneung Jangheung Gimpo-si Yanggu Hwacheon Jumunjin Munsan Mokpo Ganghwa-gun Cheorwon Sokcho Kosong Sinan Tsushima Iki Munakata Koga Nakama Nagato Kitakyushu Shimonoseki Mine Kanda Hagi Onoda Ube Yamaguchi Masuda Hōfu Hamada Shūnan Gōtsuchō Kudamatsu Hikari Ōdachō-ōda Ōtake Yanai Iwakuni Yae Hiroshima Gion Izumo Kure Unnan Miyoshi Higashihiroshima Takehara Matsuyama Jangseong Chungju Iksan Nangen Yeongdong Jeongeup Seongnam-si Osan Buan Eisen Anseong Cheongju-si Kinzan Gunsan Namsa Okcheon Daegu Yangju Masan Ungsang Gyeongju Ulsan Hwado Yŏnmu Haenam Imsil Muan Yangsan Chuncheon Koch'ang Hwawŏn Jeonju Pyeongtaek Kimhae Busan Jungpyong Gijang Yeongam Wanju 10 Nov 11 12 13 14 15 16 17 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
Buan Buan, 10 November: 7.5 µg/m³, 0.4× usual Buan, 11 November: 15.0 µg/m³, 0.9× usual Buan, 12 November: 39.7 µg/m³, 2.3× usual Buan, 13 November: 36.6 µg/m³, 2.1× usual Buan, 14 November: 18.5 µg/m³, 1.1× usual Buan, 15 November: 24.5 µg/m³, 1.4× usual Buan, 16 November: 26.8 µg/m³, 1.6× usual Buan, 17 November: 14.7 µg/m³, 0.9× usual Jungpyong Jungpyong, 10 November: 8.3 µg/m³, 0.5× usual Jungpyong, 11 November: 25.5 µg/m³, 1.7× usual Jungpyong, 12 November: 31.6 µg/m³, 2.1× usual Jungpyong, 13 November: 41.3 µg/m³, 2.7× usual Jungpyong, 14 November: 27.5 µg/m³, 1.8× usual Jungpyong, 15 November: 25.5 µg/m³, 1.7× usual Jungpyong, 16 November: 26.5 µg/m³, 1.7× usual Jungpyong, 17 November: 21.2 µg/m³, 1.4× usual Wanju Wanju, 10 November: 11.6 µg/m³, 0.8× usual Wanju, 11 November: 14.7 µg/m³, 1.0× usual Wanju, 12 November: 31.1 µg/m³, 2.1× usual Wanju, 13 November: 41.8 µg/m³, 2.8× usual Wanju, 14 November: 24.9 µg/m³, 1.7× usual Wanju, 15 November: 22.6 µg/m³, 1.5× usual Wanju, 16 November: 19.4 µg/m³, 1.3× usual Wanju, 17 November: 16.3 µg/m³, 1.1× usual Pyeongtaek Pyeongtaek, 10 November: 6.4 µg/m³, 0.4× usual Pyeongtaek, 11 November: 16.3 µg/m³, 1.1× usual Pyeongtaek, 12 November: 28.4 µg/m³, 1.8× usual Pyeongtaek, 13 November: 40.2 µg/m³, 2.6× usual Pyeongtaek, 14 November: 21.1 µg/m³, 1.4× usual Pyeongtaek, 15 November: 28.1 µg/m³, 1.8× usual Pyeongtaek, 16 November: 28.8 µg/m³, 1.9× usual Pyeongtaek, 17 November: 11.5 µg/m³, 0.7× usual Gunsan Gunsan, 10 November: 7.8 µg/m³, 0.4× usual Gunsan, 11 November: 14.0 µg/m³, 0.8× usual Gunsan, 12 November: 31.0 µg/m³, 1.7× usual Gunsan, 13 November: 39.0 µg/m³, 2.2× usual Gunsan, 14 November: 14.9 µg/m³, 0.8× usual Gunsan, 15 November: 25.5 µg/m³, 1.4× usual Gunsan, 16 November: 28.9 µg/m³, 1.6× usual Gunsan, 17 November: 17.2 µg/m³, 1.0× usual Iksan Iksan, 10 November: 7.9 µg/m³, 0.4× usual Iksan, 11 November: 14.9 µg/m³, 0.8× usual Iksan, 12 November: 33.6 µg/m³, 1.8× usual Iksan, 13 November: 38.8 µg/m³, 2.0× usual Iksan, 14 November: 19.9 µg/m³, 1.0× usual Iksan, 15 November: 23.8 µg/m³, 1.3× usual Iksan, 16 November: 26.0 µg/m³, 1.4× usual Iksan, 17 November: 15.9 µg/m³, 0.8× usual Yŏnmu Yŏnmu, 10 November: 6.2 µg/m³, 0.4× usual Yŏnmu, 11 November: 13.8 µg/m³, 0.9× usual Yŏnmu, 12 November: 30.0 µg/m³, 1.9× usual Yŏnmu, 13 November: 38.0 µg/m³, 2.4× usual Yŏnmu, 14 November: 19.1 µg/m³, 1.2× usual Yŏnmu, 15 November: 22.6 µg/m³, 1.4× usual Yŏnmu, 16 November: 21.7 µg/m³, 1.4× usual Yŏnmu, 17 November: 13.0 µg/m³, 0.8× usual Masan Masan, 10 November: 9.4 µg/m³, 0.6× usual Masan, 11 November: 11.5 µg/m³, 0.7× usual Masan, 12 November: 23.5 µg/m³, 1.4× usual Masan, 13 November: 37.9 µg/m³, 2.3× usual Masan, 14 November: 18.4 µg/m³, 1.1× usual Masan, 15 November: 18.5 µg/m³, 1.1× usual Masan, 16 November: 19.5 µg/m³, 1.2× usual Masan, 17 November: 15.7 µg/m³, 0.9× usual Hwado Hwado, 10 November: 9.9 µg/m³, 0.7× usual Hwado, 11 November: 15.2 µg/m³, 1.0× usual Hwado, 12 November: 22.8 µg/m³, 1.5× usual Hwado, 13 November: 35.8 µg/m³, 2.4× usual Hwado, 14 November: 21.4 µg/m³, 1.4× usual Hwado, 15 November: 21.0 µg/m³, 1.4× usual Hwado, 16 November: 23.0 µg/m³, 1.5× usual Hwado, 17 November: 15.0 µg/m³, 1.0× usual Okcheon Okcheon, 10 November: 12.8 µg/m³, 0.8× usual Okcheon, 11 November: 16.1 µg/m³, 1.0× usual Okcheon, 12 November: 29.7 µg/m³, 1.9× usual Okcheon, 13 November: 35.0 µg/m³, 2.2× usual Okcheon, 14 November: 26.4 µg/m³, 1.7× usual Okcheon, 15 November: 25.9 µg/m³, 1.7× usual Okcheon, 16 November: 23.5 µg/m³, 1.5× usual Okcheon, 17 November: 20.1 µg/m³, 1.3× usual Hwawŏn Hwawŏn, 10 November: 7.9 µg/m³, 0.6× usual Hwawŏn, 11 November: 8.8 µg/m³, 0.7× usual Hwawŏn, 12 November: 15.5 µg/m³, 1.2× usual Hwawŏn, 13 November: 34.6 µg/m³, 2.6× usual Hwawŏn, 14 November: 21.5 µg/m³, 1.6× usual Hwawŏn, 15 November: 19.3 µg/m³, 1.5× usual Hwawŏn, 16 November: 19.2 µg/m³, 1.5× usual Hwawŏn, 17 November: 13.7 µg/m³, 1.0× usual Cheongju-si Cheongju-si, 10 November: 9.3 µg/m³, 0.6× usual Cheongju-si, 11 November: 17.3 µg/m³, 1.1× usual Cheongju-si, 12 November: 31.0 µg/m³, 1.9× usual Cheongju-si, 13 November: 34.5 µg/m³, 2.2× usual Cheongju-si, 14 November: 25.0 µg/m³, 1.6× usual Cheongju-si, 15 November: 29.8 µg/m³, 1.9× usual Cheongju-si, 16 November: 26.2 µg/m³, 1.6× usual Cheongju-si, 17 November: 16.2 µg/m³, 1.0× usual Jeonju Jeonju, 10 November: 9.9 µg/m³, 0.8× usual Jeonju, 11 November: 9.3 µg/m³, 0.7× usual Jeonju, 12 November: 24.9 µg/m³, 1.9× usual Jeonju, 13 November: 34.4 µg/m³, 2.6× usual Jeonju, 14 November: 20.6 µg/m³, 1.6× usual Jeonju, 15 November: 18.1 µg/m³, 1.4× usual Jeonju, 16 November: 15.0 µg/m³, 1.2× usual Jeonju, 17 November: 15.6 µg/m³, 1.2× usual Kinzan Kinzan, 10 November: 11.2 µg/m³, 0.7× usual Kinzan, 11 November: 11.2 µg/m³, 0.7× usual Kinzan, 12 November: 24.9 µg/m³, 1.6× usual Kinzan, 13 November: 33.8 µg/m³, 2.2× usual Kinzan, 14 November: 25.0 µg/m³, 1.6× usual Kinzan, 15 November: 22.6 µg/m³, 1.5× usual Kinzan, 16 November: 20.2 µg/m³, 1.3× usual Kinzan, 17 November: 17.0 µg/m³, 1.1× usual Koch'ang Koch'ang, 10 November: 5.6 µg/m³, 0.4× usual Koch'ang, 11 November: 12.2 µg/m³, 0.9× usual Koch'ang, 12 November: 23.8 µg/m³, 1.8× usual Koch'ang, 13 November: 33.5 µg/m³, 2.5× usual Koch'ang, 14 November: 11.0 µg/m³, 0.8× usual Koch'ang, 15 November: 18.0 µg/m³, 1.4× usual Koch'ang, 16 November: 14.5 µg/m³, 1.1× usual Koch'ang, 17 November: 14.0 µg/m³, 1.1× usual Jeongeup Jeongeup, 10 November: 9.9 µg/m³, 0.6× usual Jeongeup, 11 November: 15.3 µg/m³, 1.0× usual Jeongeup, 12 November: 29.5 µg/m³, 1.8× usual Jeongeup, 13 November: 32.8 µg/m³, 2.1× usual Jeongeup, 14 November: 15.3 µg/m³, 1.0× usual Jeongeup, 15 November: 22.4 µg/m³, 1.4× usual Jeongeup, 16 November: 20.5 µg/m³, 1.3× usual Jeongeup, 17 November: 14.5 µg/m³, 0.9× usual Anseong Anseong, 10 November: 5.5 µg/m³, 0.4× usual Anseong, 11 November: 13.5 µg/m³, 0.9× usual Anseong, 12 November: 25.3 µg/m³, 1.7× usual Anseong, 13 November: 32.7 µg/m³, 2.2× usual Anseong, 14 November: 20.0 µg/m³, 1.4× usual Anseong, 15 November: 21.9 µg/m³, 1.5× usual Anseong, 16 November: 23.8 µg/m³, 1.6× usual Anseong, 17 November: 12.2 µg/m³, 0.8× usual Yeongdong Yeongdong, 10 November: 12.9 µg/m³, 0.8× usual Yeongdong, 11 November: 15.2 µg/m³, 0.9× usual Yeongdong, 12 November: 23.8 µg/m³, 1.5× usual Yeongdong, 13 November: 32.5 µg/m³, 2.0× usual Yeongdong, 14 November: 26.3 µg/m³, 1.6× usual Yeongdong, 15 November: 21.9 µg/m³, 1.4× usual Yeongdong, 16 November: 20.2 µg/m³, 1.3× usual Yeongdong, 17 November: 16.3 µg/m³, 1.0× usual Yeongam Yeongam, 10 November: 10.3 µg/m³, 0.9× usual Yeongam, 11 November: 9.5 µg/m³, 0.8× usual Yeongam, 12 November: 19.3 µg/m³, 1.7× usual Yeongam, 13 November: 32.1 µg/m³, 2.8× usual Yeongam, 14 November: 14.7 µg/m³, 1.3× usual Yeongam, 15 November: 14.5 µg/m³, 1.3× usual Yeongam, 16 November: 19.7 µg/m³, 1.7× usual Yeongam, 17 November: 13.3 µg/m³, 1.1× usual Namsa Namsa, 10 November: 7.3 µg/m³, 0.5× usual Namsa, 11 November: 8.0 µg/m³, 0.5× usual Namsa, 12 November: 24.8 µg/m³, 1.7× usual Namsa, 13 November: 32.0 µg/m³, 2.2× usual Namsa, 14 November: 14.7 µg/m³, 1.0× usual Namsa, 15 November: 16.1 µg/m³, 1.1× usual Namsa, 16 November: 15.7 µg/m³, 1.1× usual Namsa, 17 November: 10.9 µg/m³, 0.7× usual Osan Osan, 10 November: 5.0 µg/m³, 0.3× usual Osan, 11 November: 12.6 µg/m³, 0.8× usual Osan, 12 November: 24.4 µg/m³, 1.6× usual Osan, 13 November: 31.8 µg/m³, 2.1× usual Osan, 14 November: 18.7 µg/m³, 1.2× usual Osan, 15 November: 21.1 µg/m³, 1.4× usual Osan, 16 November: 23.7 µg/m³, 1.5× usual Osan, 17 November: 12.0 µg/m³, 0.8× usual Nangen Nangen, 10 November: 14.0 µg/m³, 0.9× usual Nangen, 11 November: 11.4 µg/m³, 0.7× usual Nangen, 12 November: 20.8 µg/m³, 1.4× usual Nangen, 13 November: 30.8 µg/m³, 2.0× usual Nangen, 14 November: 28.7 µg/m³, 1.9× usual Nangen, 15 November: 20.2 µg/m³, 1.3× usual Nangen, 16 November: 20.8 µg/m³, 1.4× usual Nangen, 17 November: 15.9 µg/m³, 1.0× usual Yangju Yangju, 10 November: 3.7 µg/m³, 0.3× usual Yangju, 11 November: 12.3 µg/m³, 0.9× usual Yangju, 12 November: 21.8 µg/m³, 1.6× usual Yangju, 13 November: 30.2 µg/m³, 2.2× usual Yangju, 14 November: 14.2 µg/m³, 1.0× usual Yangju, 15 November: 20.3 µg/m³, 1.5× usual Yangju, 16 November: 23.3 µg/m³, 1.7× usual Yangju, 17 November: 5.7 µg/m³, 0.4× usual Muan Muan, 10 November: 7.4 µg/m³, 0.6× usual Muan, 11 November: 7.2 µg/m³, 0.6× usual Muan, 12 November: 16.4 µg/m³, 1.3× usual Muan, 13 November: 29.6 µg/m³, 2.4× usual Muan, 14 November: 7.9 µg/m³, 0.6× usual Muan, 15 November: 12.5 µg/m³, 1.0× usual Muan, 16 November: 14.2 µg/m³, 1.2× usual Muan, 17 November: 11.7 µg/m³, 1.0× usual Chungju Chungju, 10 November: 9.5 µg/m³, 0.7× usual Chungju, 11 November: 14.0 µg/m³, 1.0× usual Chungju, 12 November: 18.3 µg/m³, 1.3× usual Chungju, 13 November: 29.4 µg/m³, 2.0× usual Chungju, 14 November: 23.8 µg/m³, 1.6× usual Chungju, 15 November: 21.2 µg/m³, 1.5× usual Chungju, 16 November: 19.6 µg/m³, 1.4× usual Chungju, 17 November: 15.0 µg/m³, 1.0× usual Daegu Daegu, 10 November: 9.9 µg/m³, 0.7× usual Daegu, 11 November: 7.3 µg/m³, 0.5× usual Daegu, 12 November: 18.8 µg/m³, 1.4× usual Daegu, 13 November: 29.3 µg/m³, 2.2× usual Daegu, 14 November: 21.0 µg/m³, 1.6× usual Daegu, 15 November: 19.3 µg/m³, 1.5× usual Daegu, 16 November: 19.9 µg/m³, 1.5× usual Daegu, 17 November: 14.4 µg/m³, 1.1× usual Imsil Imsil, 10 November: 9.2 µg/m³, 0.8× usual Imsil, 11 November: 8.2 µg/m³, 0.7× usual Imsil, 12 November: 15.9 µg/m³, 1.3× usual Imsil, 13 November: 29.1 µg/m³, 2.4× usual Imsil, 14 November: 16.8 µg/m³, 1.4× usual Imsil, 15 November: 17.0 µg/m³, 1.4× usual Imsil, 16 November: 15.6 µg/m³, 1.3× usual Imsil, 17 November: 14.2 µg/m³, 1.2× usual Haenam Haenam, 10 November: 9.6 µg/m³, 0.8× usual Haenam, 11 November: 7.6 µg/m³, 0.7× usual Haenam, 12 November: 16.5 µg/m³, 1.4× usual Haenam, 13 November: 27.0 µg/m³, 2.4× usual Haenam, 14 November: 9.7 µg/m³, 0.9× usual Haenam, 15 November: 13.7 µg/m³, 1.2× usual Haenam, 16 November: 11.2 µg/m³, 1.0× usual Haenam, 17 November: 15.1 µg/m³, 1.3× usual Eisen Eisen, 10 November: 9.6 µg/m³, 0.7× usual Eisen, 11 November: 9.1 µg/m³, 0.7× usual Eisen, 12 November: 17.4 µg/m³, 1.4× usual Eisen, 13 November: 27.0 µg/m³, 2.1× usual Eisen, 14 November: 26.0 µg/m³, 2.0× usual Eisen, 15 November: 18.8 µg/m³, 1.5× usual Eisen, 16 November: 14.9 µg/m³, 1.2× usual Eisen, 17 November: 13.9 µg/m³, 1.1× usual Seongnam-si Seongnam-si, 10 November: 4.9 µg/m³, 0.4× usual Seongnam-si, 11 November: 9.8 µg/m³, 0.8× usual Seongnam-si, 12 November: 16.9 µg/m³, 1.3× usual Seongnam-si, 13 November: 26.6 µg/m³, 2.1× usual Seongnam-si, 14 November: 13.3 µg/m³, 1.0× usual Seongnam-si, 15 November: 16.2 µg/m³, 1.3× usual Seongnam-si, 16 November: 20.3 µg/m³, 1.6× usual Seongnam-si, 17 November: 8.7 µg/m³, 0.7× usual Jangseong Jangseong, 10 November: 6.3 µg/m³, 0.5× usual Jangseong, 11 November: 7.2 µg/m³, 0.6× usual Jangseong, 12 November: 15.8 µg/m³, 1.3× usual Jangseong, 13 November: 25.6 µg/m³, 2.0× usual Jangseong, 14 November: 10.6 µg/m³, 0.8× usual Jangseong, 15 November: 12.3 µg/m³, 1.0× usual Jangseong, 16 November: 15.8 µg/m³, 1.3× usual Jangseong, 17 November: 11.6 µg/m³, 0.9× usual Chuncheon Chuncheon, 10 November: 6.1 µg/m³, 0.6× usual Chuncheon, 11 November: 12.1 µg/m³, 1.2× usual Chuncheon, 12 November: 20.4 µg/m³, 2.1× usual Chuncheon, 13 November: 25.1 µg/m³, 2.5× usual Chuncheon, 14 November: 21.9 µg/m³, 2.2× usual Chuncheon, 15 November: 17.8 µg/m³, 1.8× usual Chuncheon, 16 November: 21.4 µg/m³, 2.2× usual Chuncheon, 17 November: 13.5 µg/m³, 1.4× usual Busan Busan, 10 November: 13.7 µg/m³, 1.2× usual Busan, 11 November: 9.4 µg/m³, 0.8× usual Busan, 12 November: 12.3 µg/m³, 1.1× usual Busan, 13 November: 19.0 µg/m³, 1.7× usual Busan, 14 November: 30.7 µg/m³, 2.7× usual Busan, 15 November: 16.2 µg/m³, 1.4× usual Busan, 16 November: 13.3 µg/m³, 1.2× usual Busan, 17 November: 17.0 µg/m³, 1.5× usual Kimhae Kimhae, 10 November: 11.8 µg/m³, 1.0× usual Kimhae, 11 November: 9.7 µg/m³, 0.9× usual Kimhae, 12 November: 14.6 µg/m³, 1.3× usual Kimhae, 13 November: 20.9 µg/m³, 1.8× usual Kimhae, 14 November: 30.3 µg/m³, 2.7× usual Kimhae, 15 November: 17.2 µg/m³, 1.5× usual Kimhae, 16 November: 15.5 µg/m³, 1.4× usual Kimhae, 17 November: 13.8 µg/m³, 1.2× usual Gijang Gijang, 10 November: 12.9 µg/m³, 1.3× usual Gijang, 11 November: 8.9 µg/m³, 0.9× usual Gijang, 12 November: 8.4 µg/m³, 0.8× usual Gijang, 13 November: 14.9 µg/m³, 1.4× usual Gijang, 14 November: 29.0 µg/m³, 2.8× usual Gijang, 15 November: 13.5 µg/m³, 1.3× usual Gijang, 16 November: 10.7 µg/m³, 1.0× usual Gijang, 17 November: 14.0 µg/m³, 1.4× usual Ulsan Ulsan, 10 November: 12.8 µg/m³, 1.1× usual Ulsan, 11 November: 8.1 µg/m³, 0.7× usual Ulsan, 12 November: 10.7 µg/m³, 0.9× usual Ulsan, 13 November: 20.0 µg/m³, 1.7× usual Ulsan, 14 November: 27.8 µg/m³, 2.4× usual Ulsan, 15 November: 15.8 µg/m³, 1.4× usual Ulsan, 16 November: 15.3 µg/m³, 1.3× usual Ulsan, 17 November: 14.3 µg/m³, 1.2× usual Ungsang Ungsang, 10 November: 11.4 µg/m³, 1.0× usual Ungsang, 11 November: 7.6 µg/m³, 0.7× usual Ungsang, 12 November: 10.3 µg/m³, 0.9× usual Ungsang, 13 November: 14.4 µg/m³, 1.3× usual Ungsang, 14 November: 26.7 µg/m³, 2.4× usual Ungsang, 15 November: 13.0 µg/m³, 1.2× usual Ungsang, 16 November: 10.0 µg/m³, 0.9× usual Ungsang, 17 November: 10.1 µg/m³, 0.9× usual Yangsan Yangsan, 10 November: 13.3 µg/m³, 1.3× usual Yangsan, 11 November: 11.0 µg/m³, 1.1× usual Yangsan, 12 November: 13.4 µg/m³, 1.3× usual Yangsan, 13 November: 17.8 µg/m³, 1.8× usual Yangsan, 14 November: 25.3 µg/m³, 2.5× usual Yangsan, 15 November: 14.3 µg/m³, 1.4× usual Yangsan, 16 November: 12.4 µg/m³, 1.2× usual Yangsan, 17 November: 12.8 µg/m³, 1.3× usual Gyeongju Gyeongju, 10 November: 8.5 µg/m³, 0.8× usual Gyeongju, 11 November: 6.0 µg/m³, 0.6× usual Gyeongju, 12 November: 10.9 µg/m³, 1.0× usual Gyeongju, 13 November: 20.2 µg/m³, 1.9× usual Gyeongju, 14 November: 25.3 µg/m³, 2.4× usual Gyeongju, 15 November: 14.2 µg/m³, 1.3× usual Gyeongju, 16 November: 11.5 µg/m³, 1.1× usual Gyeongju, 17 November: 13.8 µg/m³, 1.3× usual 10 Nov 11 12 13 14 15 16 17 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
Gijang Busan, South Korea 1 14 November 10.3 2.8× Wanju Jeollabuk-do, South Korea 1 13 November 14.9 2.8× Yeongam Jeollanam-do, South Korea 1 13 November 11.6 2.8× Jungpyong North Chungcheong, South Korea 1 13 November 15.3 2.7× Busan Busan, South Korea 1 14 November 11.5 2.7× Kimhae Gyeongsangnam-do, South Korea 1 14 November 11.4 2.7× Jeonju Jeollabuk-do, South Korea 1 13 November 13.0 2.6× Hwawŏn Daegu, South Korea 1 13 November 13.1 2.6× Pyeongtaek Gyeonggi-do, South Korea 1 13 November 15.5 2.6× Chuncheon Gangwon-do, South Korea 1 13 November 9.9 2.5× Yangsan Gyeongsangnam-do, South Korea 1 14 November 10.0 2.5× Koch'ang Jeollabuk-do, South Korea 1 13 November 13.3 2.5× Yŏnmu Chungcheongnam-do, South Korea 1 13 November 15.6 2.4× Muan Jeollanam-do, South Korea 1 13 November 12.3 2.4× Imsil Jeollabuk-do, South Korea 1 13 November 12.1 2.4× Ulsan Ulsan, South Korea 1 14 November 11.6 2.4× Gyeongju Gyeongsangbuk-do, South Korea 1 14 November 10.6 2.4× Ungsang Gyeongsangnam-do, South Korea 1 14 November 11.2 2.4× Haenam Jeollanam-do, South Korea 1 13 November 11.4 2.4× Hwado Gyeonggi-do, South Korea 1 13 November 15.2 2.4× Buan Jeollabuk-do, South Korea 1 12 November 17.2 2.3× Masan Gwangju, South Korea 1 13 November 16.6 2.3× Okcheon North Chungcheong, South Korea 1 13 November 15.6 2.2× Kinzan Chungcheongnam-do, South Korea 1 13 November 15.2 2.2× Anseong Gyeonggi-do, South Korea 1 13 November 14.8 2.2× Daegu Daegu, South Korea 1 13 November 13.3 2.2× Gunsan Jeollabuk-do, South Korea 1 13 November 17.8 2.2× Namsa Jeollabuk-do, South Korea 1 13 November 14.8 2.2× Yangju Gyeonggi-do, South Korea 1 13 November 14.0 2.2× Cheongju-si North Chungcheong, South Korea 1 13 November 16.0 2.2× Eisen Gyeongsangbuk-do, South Korea 2 13 November 12.8 2.1× Seongnam-si Gyeonggi-do, South Korea 1 13 November 12.8 2.1× Osan Gyeonggi-do, South Korea 1 13 November 15.5 2.1× Jeongeup Jeollabuk-do, South Korea 1 13 November 16.0 2.1× Jangseong Jeollanam-do, South Korea 1 13 November 12.5 2.0× Iksan Jeollabuk-do, South Korea 1 13 November 19.0 2.0× Chungju North Chungcheong, South Korea 1 13 November 14.5 2.0× Yeongdong North Chungcheong, South Korea 1 13 November 16.1 2.0× Nangen Jeollabuk-do, South Korea 1 13 November 15.3 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 25 of 43 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 South Korea, November 2025 39 Bars: cities reached; colour: the level of the episode's highest daily reading. All 43 .
Use this page SmogRank, South Korea, November 2025: 39 cities with PM2.5 at twice their usual or more, 13 to 14 November 2025, smogrank.com/episodes/2025-11-south-korea-2 (accessed 2 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.
