SmogRank / Episodes / South Korea
Gyeonggi-do, South Korea, July 2024
For 1 day, on 4 July 2024, 22 cities in South Korea had PM2.5 at least twice their usual for the time of year. The worst reading was Gimpo-si, Gyeonggi-do, South Korea: 33.0 µg/m³ on 4 July, about 2.1× its usual 15.4.
No cause named We have no fire or smoke records for these days, so we only say what the measurements show.
Cities reached 22 in 1 country
Days 1 4 July 2024
Worst day 4 July 22 cities counted
Furthest above usual 2.9× Yangju
Day by day
Play 4 July 22 cities at twice their usual or more
Gwangju Seongnam-si Suwon Anyang-si Icheon-si Osan Ansan-si Anseong Pyeongtaek Munsan Seonghwan Chuncheon Chinch'ŏn Cheonan Hongch’ŏn Asan Hwacheon Tangjin Chungju Koesan Yesan Cheongju-si Sejong Taesal-li Yanggu Gongju Seosan Hongseong Daejeon Okcheon Buyeo Neietsu Nonsan Boryeong Mungyeong Yŏnmu Kinzan Yeongdong Sangju Yecheon Kosong Sokcho Yeongju Namsa Iksan Gunsan Gimcheon Wanju Jumunjin Jeonju Gangneung Jinan-gun Kimje Andong Gumi T’aebaek Buan Kunwi Changsu Imsil Donghae City Waegwan Jeongeup Santyoku Nangen Cheongsong gun Koch'ang Hwawŏn Daegu Damyang Jangseong Hayang Gyeongsan-si Eisen Kurye Yeonggwang Changnyeong Gwangju Masan Hwasun Chinju Hadong Miryang Yeonil Gyeongju Naesŏ Pohang Changwon Kimhae Yangsan Ungsang Ulsan Busan Gijang Cheorwon Hwaseong-si Gimpo-si Guri-si Wŏnju Yeoju Gwangmyeong Wabu Namyangju Hwado Jungpyong Incheon Goyang-si Bucheon-si Uijeongbu-si Pubal Ganghwa-gun Seoul Hanam Yangp'yŏng Gapyeong Yangju 1 Jul 2 3 4 5 6 7 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
Gimpo-si Gimpo-si, 1 July: 15.9 µg/m³, 1.0× usual Gimpo-si, 2 July: 11.3 µg/m³, 0.7× usual Gimpo-si, 3 July: 18.8 µg/m³, 1.2× usual Gimpo-si, 4 July: 33.0 µg/m³, 2.1× usual Gimpo-si, 5 July: 13.1 µg/m³, 0.9× usual Gimpo-si, 6 July: 20.0 µg/m³, 1.3× usual Gimpo-si, 7 July: 16.5 µg/m³, 1.1× usual Yeoju Yeoju, 1 July: 20.0 µg/m³, 1.3× usual Yeoju, 2 July: 12.0 µg/m³, 0.8× usual Yeoju, 3 July: 18.3 µg/m³, 1.2× usual Yeoju, 4 July: 31.9 µg/m³, 2.1× usual Yeoju, 5 July: 16.2 µg/m³, 1.1× usual Yeoju, 6 July: 19.6 µg/m³, 1.3× usual Yeoju, 7 July: 18.1 µg/m³, 1.2× usual Hanam Hanam, 1 July: 16.2 µg/m³, 1.2× usual Hanam, 2 July: 9.8 µg/m³, 0.7× usual Hanam, 3 July: 17.0 µg/m³, 1.3× usual Hanam, 4 July: 31.2 µg/m³, 2.4× usual Hanam, 5 July: 11.7 µg/m³, 0.9× usual Hanam, 6 July: 18.5 µg/m³, 1.4× usual Hanam, 7 July: 15.1 µg/m³, 1.2× usual Incheon Incheon, 1 July: 15.7 µg/m³, 1.1× usual Incheon, 2 July: 14.1 µg/m³, 1.0× usual Incheon, 3 July: 19.4 µg/m³, 1.4× usual Incheon, 4 July: 31.2 µg/m³, 2.2× usual Incheon, 5 July: 11.7 µg/m³, 0.8× usual Incheon, 6 July: 18.4 µg/m³, 1.3× usual Incheon, 7 July: 15.0 µg/m³, 1.0× usual Seoul Seoul, 1 July: 16.4 µg/m³, 1.2× usual Seoul, 2 July: 9.8 µg/m³, 0.7× usual Seoul, 3 July: 15.8 µg/m³, 1.2× usual Seoul, 4 July: 30.7 µg/m³, 2.3× usual Seoul, 5 July: 11.7 µg/m³, 0.9× usual Seoul, 6 July: 17.9 µg/m³, 1.4× usual Seoul, 7 July: 13.9 µg/m³, 1.1× usual Gwangmyeong Gwangmyeong, 1 July: 17.4 µg/m³, 1.3× usual Gwangmyeong, 2 July: 11.4 µg/m³, 0.8× usual Gwangmyeong, 3 July: 15.8 µg/m³, 1.2× usual Gwangmyeong, 4 July: 30.3 µg/m³, 2.2× usual Gwangmyeong, 5 July: 12.1 µg/m³, 0.9× usual Gwangmyeong, 6 July: 17.6 µg/m³, 1.3× usual Gwangmyeong, 7 July: 13.8 µg/m³, 1.0× usual Goyang-si Goyang-si, 1 July: 14.7 µg/m³, 1.1× usual Goyang-si, 2 July: 9.3 µg/m³, 0.7× usual Goyang-si, 3 July: 14.7 µg/m³, 1.1× usual Goyang-si, 4 July: 30.0 µg/m³, 2.2× usual Goyang-si, 5 July: 11.8 µg/m³, 0.9× usual Goyang-si, 6 July: 17.4 µg/m³, 1.3× usual Goyang-si, 7 July: 14.9 µg/m³, 1.1× usual Wŏnju Wŏnju, 1 July: 18.7 µg/m³, 1.4× usual Wŏnju, 2 July: 12.2 µg/m³, 0.9× usual Wŏnju, 3 July: 17.9 µg/m³, 1.4× usual Wŏnju, 4 July: 28.3 µg/m³, 2.1× usual Wŏnju, 5 July: 15.1 µg/m³, 1.1× usual Wŏnju, 6 July: 23.0 µg/m³, 1.7× usual Wŏnju, 7 July: 18.3 µg/m³, 1.4× usual Cheorwon Cheorwon, 1 July: 16.0 µg/m³, 1.1× usual Cheorwon, 2 July: 8.6 µg/m³, 0.6× usual Cheorwon, 3 July: 10.8 µg/m³, 0.8× usual Cheorwon, 4 July: 28.3 µg/m³, 2.0× usual Cheorwon, 5 July: 11.6 µg/m³, 0.8× usual Cheorwon, 6 July: 14.9 µg/m³, 1.1× usual Cheorwon, 7 July: 14.4 µg/m³, 1.0× usual Ganghwa-gun Ganghwa-gun, 1 July: 13.0 µg/m³, 1.0× usual Ganghwa-gun, 2 July: 12.5 µg/m³, 1.0× usual Ganghwa-gun, 3 July: 14.7 µg/m³, 1.2× usual Ganghwa-gun, 4 July: 28.1 µg/m³, 2.3× usual Ganghwa-gun, 5 July: 12.8 µg/m³, 1.0× usual Ganghwa-gun, 6 July: 19.0 µg/m³, 1.5× usual Ganghwa-gun, 7 July: 15.3 µg/m³, 1.2× usual Guri-si Guri-si, 1 July: 14.0 µg/m³, 1.0× usual Guri-si, 2 July: 10.3 µg/m³, 0.8× usual Guri-si, 3 July: 14.5 µg/m³, 1.1× usual Guri-si, 4 July: 28.1 µg/m³, 2.1× usual Guri-si, 5 July: 10.9 µg/m³, 0.8× usual Guri-si, 6 July: 16.8 µg/m³, 1.3× usual Guri-si, 7 July: 13.1 µg/m³, 1.0× usual Hwado Hwado, 1 July: 15.7 µg/m³, 1.2× usual Hwado, 2 July: 7.9 µg/m³, 0.6× usual Hwado, 3 July: 14.0 µg/m³, 1.1× usual Hwado, 4 July: 28.0 µg/m³, 2.2× usual Hwado, 5 July: 10.3 µg/m³, 0.8× usual Hwado, 6 July: 14.5 µg/m³, 1.1× usual Hwado, 7 July: 12.0 µg/m³, 0.9× usual Hwaseong-si Hwaseong-si, 1 July: 13.2 µg/m³, 1.0× usual Hwaseong-si, 2 July: 9.6 µg/m³, 0.7× usual Hwaseong-si, 3 July: 18.4 µg/m³, 1.4× usual Hwaseong-si, 4 July: 28.0 µg/m³, 2.1× usual Hwaseong-si, 5 July: 12.3 µg/m³, 0.9× usual Hwaseong-si, 6 July: 17.2 µg/m³, 1.3× usual Hwaseong-si, 7 July: 12.6 µg/m³, 0.9× usual Gapyeong Gapyeong, 1 July: 17.8 µg/m³, 1.7× usual Gapyeong, 2 July: 12.3 µg/m³, 1.2× usual Gapyeong, 3 July: 13.8 µg/m³, 1.4× usual Gapyeong, 4 July: 27.5 µg/m³, 2.7× usual Gapyeong, 5 July: 13.1 µg/m³, 1.3× usual Gapyeong, 6 July: 19.9 µg/m³, 2.0× usual Gapyeong, 7 July: 17.1 µg/m³, 1.7× usual Bucheon-si Bucheon-si, 1 July: 14.6 µg/m³, 1.2× usual Bucheon-si, 2 July: 9.0 µg/m³, 0.7× usual Bucheon-si, 3 July: 13.9 µg/m³, 1.1× usual Bucheon-si, 4 July: 27.5 µg/m³, 2.2× usual Bucheon-si, 5 July: 11.0 µg/m³, 0.9× usual Bucheon-si, 6 July: 15.9 µg/m³, 1.3× usual Bucheon-si, 7 July: 12.8 µg/m³, 1.0× usual Uijeongbu-si Uijeongbu-si, 1 July: 11.8 µg/m³, 1.0× usual Uijeongbu-si, 2 July: 8.0 µg/m³, 0.7× usual Uijeongbu-si, 3 July: 11.7 µg/m³, 1.0× usual Uijeongbu-si, 4 July: 26.9 µg/m³, 2.2× usual Uijeongbu-si, 5 July: 10.5 µg/m³, 0.9× usual Uijeongbu-si, 6 July: 15.5 µg/m³, 1.3× usual Uijeongbu-si, 7 July: 13.3 µg/m³, 1.1× usual Yangp'yŏng Yangp'yŏng, 1 July: 12.5 µg/m³, 1.1× usual Yangp'yŏng, 2 July: 9.3 µg/m³, 0.8× usual Yangp'yŏng, 3 July: 12.7 µg/m³, 1.2× usual Yangp'yŏng, 4 July: 26.8 µg/m³, 2.4× usual Yangp'yŏng, 5 July: 9.5 µg/m³, 0.9× usual Yangp'yŏng, 6 July: 16.1 µg/m³, 1.5× usual Yangp'yŏng, 7 July: 14.1 µg/m³, 1.3× usual Pubal Pubal, 1 July: 19.8 µg/m³, 1.7× usual Pubal, 2 July: 9.8 µg/m³, 0.9× usual Pubal, 3 July: 13.9 µg/m³, 1.2× usual Pubal, 4 July: 26.5 µg/m³, 2.3× usual Pubal, 5 July: 11.8 µg/m³, 1.0× usual Pubal, 6 July: 15.2 µg/m³, 1.3× usual Pubal, 7 July: 13.4 µg/m³, 1.2× usual Yangju Yangju, 1 July: 11.2 µg/m³, 1.2× usual Yangju, 2 July: 6.5 µg/m³, 0.7× usual Yangju, 3 July: 8.2 µg/m³, 0.9× usual Yangju, 4 July: 26.1 µg/m³, 2.9× usual Yangju, 5 July: 8.5 µg/m³, 0.9× usual Yangju, 6 July: 13.6 µg/m³, 1.5× usual Yangju, 7 July: 11.9 µg/m³, 1.3× usual Namyangju Namyangju, 1 July: 13.8 µg/m³, 1.2× usual Namyangju, 2 July: 9.3 µg/m³, 0.8× usual Namyangju, 3 July: 12.4 µg/m³, 1.1× usual Namyangju, 4 July: 25.6 µg/m³, 2.2× usual Namyangju, 5 July: 11.2 µg/m³, 0.9× usual Namyangju, 6 July: 16.1 µg/m³, 1.4× usual Namyangju, 7 July: 12.6 µg/m³, 1.1× usual Jungpyong Jungpyong, 1 July: 20.9 µg/m³, 1.8× usual Jungpyong, 2 July: 14.5 µg/m³, 1.3× usual Jungpyong, 3 July: 15.0 µg/m³, 1.3× usual Jungpyong, 4 July: 25.3 µg/m³, 2.2× usual Jungpyong, 5 July: 11.6 µg/m³, 1.0× usual Jungpyong, 6 July: 16.5 µg/m³, 1.4× usual Jungpyong, 7 July: 10.6 µg/m³, 0.9× usual Wabu Wabu, 1 July: 12.7 µg/m³, 1.1× usual Wabu, 2 July: no reading Wabu, 3 July: 10.8 µg/m³, 0.9× usual Wabu, 4 July: 25.0 µg/m³, 2.2× usual Wabu, 5 July: 10.8 µg/m³, 0.9× usual Wabu, 6 July: 13.2 µg/m³, 1.1× usual Wabu, 7 July: 10.7 µg/m³, 0.9× usual 1 Jul 2 3 4 5 6 7 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
Yangju Gyeonggi-do, South Korea 1 4 July 9.1 2.9× Gapyeong Gyeonggi-do, South Korea 1 4 July 10.2 2.7× Yangp'yŏng Gyeonggi-do, South Korea 1 4 July 11.0 2.4× Hanam Gyeonggi-do, South Korea 1 4 July 13.1 2.4× Seoul Seoul, South Korea 1 4 July 13.2 2.3× Pubal Gyeonggi-do, South Korea 1 4 July 11.5 2.3× Ganghwa-gun Incheon, South Korea 1 4 July 12.4 2.3× Gwangmyeong Gyeonggi-do, South Korea 1 4 July 13.5 2.2× Uijeongbu-si Gyeonggi-do, South Korea 1 4 July 12.2 2.2× Bucheon-si Gyeonggi-do, South Korea 1 4 July 12.5 2.2× Jungpyong North Chungcheong, South Korea 1 4 July 11.5 2.2× Incheon Incheon, South Korea 1 4 July 14.3 2.2× Goyang-si Gyeonggi-do, South Korea 1 4 July 13.8 2.2× Wabu Gyeonggi-do, South Korea 1 4 July 11.5 2.2× Hwado Gyeonggi-do, South Korea 1 4 July 12.9 2.2× Namyangju Gyeonggi-do, South Korea 1 4 July 11.8 2.2× Wŏnju Gangwon-do, South Korea 1 4 July 13.2 2.1× Gimpo-si Gyeonggi-do, South Korea 1 4 July 15.4 2.1× Yeoju Gyeonggi-do, South Korea 1 4 July 15.1 2.1× Guri-si Gyeonggi-do, South Korea 1 4 July 13.4 2.1× Hwaseong-si Gyeonggi-do, South Korea 1 4 July 13.4 2.1× Cheorwon Gangwon-do, South Korea 1 4 July 14.0 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 45 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, South Korea, July 2024 22 Bars: cities reached; colour: the level of the episode's highest daily reading. All 63 .
Use this page SmogRank, Gyeonggi-do, South Korea, July 2024: 22 cities with PM2.5 at twice their usual or more, 4 July 2024, smogrank.com/episodes/2024-07-gyeonggi-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.
