SmogRank / Episodes / South Korea

South Korea, January 2025

For 1 day, on 6 January 2025, 55 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: 47.3 µg/m³ on 6 January, about 2.0× its usual 23.5.

No cause namedWe have no fire or smoke records for these days, so we only say what the measurements show.
Cities reached55in 1 country
Days16 January 2025
Worst day6 January55 cities counted
Furthest above usual3.8×Sinan

Day by day

6 January 55 cities at twice their usual or more
Jinan-gunYeongdongKinzanImsilOkcheonNangenJeonjuDaejeonKuryeGumiWaegwanNamsaYŏnmuChinjuSangjuHadongNonsanHwawŏnIksanChangnyeongJeongeupKimjeKwangyangDaeguCheongju-siGwangyangGongjuSejongSuncheonDamyangBuyeoJungpyongKoesanGyeongsan-siBuanGoseongBeolgyoGwangjuYeosuMiryangHwasunChinch'ŏnJangseongChangwonMasanCheonanChungjuTongyeongAsanBoseongYesanSeonghwanBoryeongKimhaeNajuSinhyeonHongseongYeongjuJangheungYeongamMuanTangjinWŏnjuSeosanMokpoHaenamTaesal-liHanamT’aebaekGwangmyeongGuri-siHwadoNamyangjuSeoulGapyeongUijeongbu-siYangjuTsushimaMunsanHwacheonGanghwa-gunJumunjinIkiMatsuuraKaratsuSaseboImarichō-kōItoshimaMaebaru-chūōKogaSaikaiMunakataTakuFukuokaTakeoUreshinomachi-shimojukuKogaWakasugiHigashigōKasugaNakamaKashimaNōgataKanzakimachi-kanzakiSagaŌmuraTogitsuIizukaKitakyushuShimonosekiTosuOgōriKurumeNagatoYanagawaTagawaIsahayaChikugoKandaMineTanushimarumachi-toyokiYukuhashiŌmutaUkihaOnodaYameAraoHagiUbeTamanaBuzenHitaYamagaYamaguchiNakatsuUekimachi-mōnoKikuchiHōfuMasudaŌzuAsoShūnanHamadaYufuKudamatsuBeppuGōtsuchōKunisakiHikariŌitaTsurusakiYanaiŌtakeIwakuniMieŌdachō-ōdaUsukiHiroshimaGionYaeTsukumiuraIzumoSaikiKureHigashihiroshimaYawatahamaIyoMatsuyamaUwajimaNaesŏPubalAndongHwaseong-siIncheonGangneungGunsanGwangjuPyeongtaekYangsanYeojuAnseongIcheon-siKunwiGyeongjuOsanBusanYangp'yŏngNeietsuWabuUngsangDonghae CityAnsan-siChangsuHayangGijangGimcheonPohangSuwonYecheonCheongsong gunCheorwonChuncheonGimpo-siKoch'angGoyang-siWanjuYeonilGeojeAnyang-siHongch’ŏnUlsanEisenSeongnam-siMungyeongBucheon-siSantyokuYeonggwangJeju CityYangguSeogwipoGaigeturiSokchoKosongSinan
3 Jan456789
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

PubalPubal, 3 January: 18.2 µg/m³, 0.8× usualPubal, 4 January: 24.3 µg/m³, 1.0× usualPubal, 5 January: 34.9 µg/m³, 1.5× usualPubal, 6 January: 47.3 µg/m³, 2.0× usualPubal, 7 January: 17.5 µg/m³, 0.7× usualPubal, 8 January: 23.3 µg/m³, 1.0× usualPubal, 9 January: 8.1 µg/m³, 0.3× usualYangp'yŏngYangp'yŏng, 3 January: 16.9 µg/m³, 0.8× usualYangp'yŏng, 4 January: 24.3 µg/m³, 1.1× usualYangp'yŏng, 5 January: 32.5 µg/m³, 1.5× usualYangp'yŏng, 6 January: 45.2 µg/m³, 2.1× usualYangp'yŏng, 7 January: 13.8 µg/m³, 0.7× usualYangp'yŏng, 8 January: 16.6 µg/m³, 0.8× usualYangp'yŏng, 9 January: 10.3 µg/m³, 0.5× usualCheorwonCheorwon, 3 January: 14.3 µg/m³, 0.8× usualCheorwon, 4 January: 19.7 µg/m³, 1.0× usualCheorwon, 5 January: 26.9 µg/m³, 1.4× usualCheorwon, 6 January: 43.4 µg/m³, 2.3× usualCheorwon, 7 January: 13.2 µg/m³, 0.7× usualCheorwon, 8 January: 12.2 µg/m³, 0.6× usualCheorwon, 9 January: 8.2 µg/m³, 0.4× usualHongch’ŏnHongch’ŏn, 3 January: 17.3 µg/m³, 1.0× usualHongch’ŏn, 4 January: 20.0 µg/m³, 1.1× usualHongch’ŏn, 5 January: 33.0 µg/m³, 1.8× usualHongch’ŏn, 6 January: 43.1 µg/m³, 2.4× usualHongch’ŏn, 7 January: 11.4 µg/m³, 0.6× usualHongch’ŏn, 8 January: 15.2 µg/m³, 0.8× usualHongch’ŏn, 9 January: 7.5 µg/m³, 0.4× usualGimcheonGimcheon, 3 January: 15.6 µg/m³, 0.8× usualGimcheon, 4 January: 17.3 µg/m³, 0.9× usualGimcheon, 5 January: 29.2 µg/m³, 1.5× usualGimcheon, 6 January: 43.0 µg/m³, 2.2× usualGimcheon, 7 January: 17.5 µg/m³, 0.9× usualGimcheon, 8 January: 15.4 µg/m³, 0.8× usualGimcheon, 9 January: 14.5 µg/m³, 0.7× usualBucheon-siBucheon-si, 3 January: 12.4 µg/m³, 0.7× usualBucheon-si, 4 January: 17.1 µg/m³, 1.0× usualBucheon-si, 5 January: 23.8 µg/m³, 1.4× usualBucheon-si, 6 January: 42.9 µg/m³, 2.5× usualBucheon-si, 7 January: 12.7 µg/m³, 0.7× usualBucheon-si, 8 January: 16.1 µg/m³, 0.9× usualBucheon-si, 9 January: 8.0 µg/m³, 0.5× usualYeojuYeoju, 3 January: 14.9 µg/m³, 0.7× usualYeoju, 4 January: 21.8 µg/m³, 1.0× usualYeoju, 5 January: 28.0 µg/m³, 1.3× usualYeoju, 6 January: 42.7 µg/m³, 2.0× usualYeoju, 7 January: 11.7 µg/m³, 0.6× usualYeoju, 8 January: 17.6 µg/m³, 0.8× usualYeoju, 9 January: 7.8 µg/m³, 0.4× usualGimpo-siGimpo-si, 3 January: 13.4 µg/m³, 0.7× usualGimpo-si, 4 January: 17.9 µg/m³, 1.0× usualGimpo-si, 5 January: 23.0 µg/m³, 1.2× usualGimpo-si, 6 January: 42.4 µg/m³, 2.3× usualGimpo-si, 7 January: 14.4 µg/m³, 0.8× usualGimpo-si, 8 January: 15.9 µg/m³, 0.9× usualGimpo-si, 9 January: 7.8 µg/m³, 0.4× usualIcheon-siIcheon-si, 3 January: 12.5 µg/m³, 0.6× usualIcheon-si, 4 January: 18.5 µg/m³, 0.9× usualIcheon-si, 5 January: 29.1 µg/m³, 1.5× usualIcheon-si, 6 January: 41.3 µg/m³, 2.1× usualIcheon-si, 7 January: 9.8 µg/m³, 0.5× usualIcheon-si, 8 January: 16.0 µg/m³, 0.8× usualIcheon-si, 9 January: 6.3 µg/m³, 0.3× usualGoyang-siGoyang-si, 3 January: 13.9 µg/m³, 0.8× usualGoyang-si, 4 January: 18.2 µg/m³, 1.0× usualGoyang-si, 5 January: 26.9 µg/m³, 1.5× usualGoyang-si, 6 January: 40.8 µg/m³, 2.3× usualGoyang-si, 7 January: 13.9 µg/m³, 0.8× usualGoyang-si, 8 January: 18.4 µg/m³, 1.0× usualGoyang-si, 9 January: 8.3 µg/m³, 0.5× usualAnyang-siAnyang-si, 3 January: 12.4 µg/m³, 0.7× usualAnyang-si, 4 January: 16.6 µg/m³, 1.0× usualAnyang-si, 5 January: 22.9 µg/m³, 1.4× usualAnyang-si, 6 January: 40.6 µg/m³, 2.4× usualAnyang-si, 7 January: 11.3 µg/m³, 0.7× usualAnyang-si, 8 January: 15.0 µg/m³, 0.9× usualAnyang-si, 9 January: 8.0 µg/m³, 0.5× usualPohangPohang, 3 January: 15.3 µg/m³, 0.8× usualPohang, 4 January: 14.3 µg/m³, 0.8× usualPohang, 5 January: 21.2 µg/m³, 1.2× usualPohang, 6 January: 40.3 µg/m³, 2.2× usualPohang, 7 January: 15.8 µg/m³, 0.9× usualPohang, 8 January: 15.8 µg/m³, 0.9× usualPohang, 9 January: 13.9 µg/m³, 0.8× usualGwangjuGwangju, 3 January: 15.4 µg/m³, 0.8× usualGwangju, 4 January: 18.6 µg/m³, 0.9× usualGwangju, 5 January: 26.2 µg/m³, 1.3× usualGwangju, 6 January: 40.3 µg/m³, 2.0× usualGwangju, 7 January: 12.4 µg/m³, 0.6× usualGwangju, 8 January: 14.6 µg/m³, 0.7× usualGwangju, 9 January: 8.1 µg/m³, 0.4× usualSeongnam-siSeongnam-si, 3 January: 11.4 µg/m³, 0.7× usualSeongnam-si, 4 January: 14.8 µg/m³, 0.9× usualSeongnam-si, 5 January: 22.7 µg/m³, 1.4× usualSeongnam-si, 6 January: 40.1 µg/m³, 2.5× usualSeongnam-si, 7 January: 10.0 µg/m³, 0.6× usualSeongnam-si, 8 January: 14.2 µg/m³, 0.9× usualSeongnam-si, 9 January: 7.4 µg/m³, 0.5× usualSuwonSuwon, 3 January: 13.9 µg/m³, 0.8× usualSuwon, 4 January: 18.5 µg/m³, 1.0× usualSuwon, 5 January: 23.8 µg/m³, 1.3× usualSuwon, 6 January: 39.7 µg/m³, 2.2× usualSuwon, 7 January: 12.0 µg/m³, 0.7× usualSuwon, 8 January: 14.8 µg/m³, 0.8× usualSuwon, 9 January: 7.7 µg/m³, 0.4× usualWanjuWanju, 3 January: 10.2 µg/m³, 0.6× usualWanju, 4 January: 14.5 µg/m³, 0.9× usualWanju, 5 January: 15.7 µg/m³, 1.0× usualWanju, 6 January: 38.4 µg/m³, 2.3× usualWanju, 7 January: 11.2 µg/m³, 0.7× usualWanju, 8 January: 13.7 µg/m³, 0.8× usualWanju, 9 January: 7.4 µg/m³, 0.4× usualWabuWabu, 3 January: 12.5 µg/m³, 0.7× usualWabu, 4 January: 17.7 µg/m³, 1.0× usualWabu, 5 January: 21.9 µg/m³, 1.3× usualWabu, 6 January: 38.1 µg/m³, 2.2× usualWabu, 7 January: 14.0 µg/m³, 0.8× usualWabu, 8 January: 13.3 µg/m³, 0.8× usualWabu, 9 January: 8.7 µg/m³, 0.5× usualChuncheonChuncheon, 3 January: 14.7 µg/m³, 0.9× usualChuncheon, 4 January: 18.1 µg/m³, 1.1× usualChuncheon, 5 January: 21.1 µg/m³, 1.3× usualChuncheon, 6 January: 38.0 µg/m³, 2.3× usualChuncheon, 7 January: 11.9 µg/m³, 0.7× usualChuncheon, 8 January: 13.2 µg/m³, 0.8× usualChuncheon, 9 January: 9.1 µg/m³, 0.6× usualOsanOsan, 3 January: 14.8 µg/m³, 0.8× usualOsan, 4 January: 20.2 µg/m³, 1.1× usualOsan, 5 January: 20.6 µg/m³, 1.2× usualOsan, 6 January: 37.3 µg/m³, 2.1× usualOsan, 7 January: 12.6 µg/m³, 0.7× usualOsan, 8 January: 16.1 µg/m³, 0.9× usualOsan, 9 January: 7.4 µg/m³, 0.4× usualYangguYanggu, 3 January: 12.0 µg/m³, 0.9× usualYanggu, 4 January: no readingYanggu, 5 January: no readingYanggu, 6 January: 37.2 µg/m³, 2.6× usualYanggu, 7 January: 10.2 µg/m³, 0.7× usualYanggu, 8 January: 13.3 µg/m³, 0.9× usualYanggu, 9 January: 9.0 µg/m³, 0.6× usualYeonilYeonil, 3 January: 10.8 µg/m³, 0.7× usualYeonil, 4 January: 9.7 µg/m³, 0.6× usualYeonil, 5 January: 19.3 µg/m³, 1.2× usualYeonil, 6 January: 37.2 µg/m³, 2.3× usualYeonil, 7 January: 11.6 µg/m³, 0.7× usualYeonil, 8 January: 11.4 µg/m³, 0.7× usualYeonil, 9 January: 8.9 µg/m³, 0.5× usualAnsan-siAnsan-si, 3 January: 11.5 µg/m³, 0.7× usualAnsan-si, 4 January: 18.0 µg/m³, 1.1× usualAnsan-si, 5 January: 21.8 µg/m³, 1.3× usualAnsan-si, 6 January: 37.1 µg/m³, 2.2× usualAnsan-si, 7 January: 10.6 µg/m³, 0.6× usualAnsan-si, 8 January: 13.9 µg/m³, 0.8× usualAnsan-si, 9 January: 6.7 µg/m³, 0.4× usualPyeongtaekPyeongtaek, 3 January: 15.0 µg/m³, 0.8× usualPyeongtaek, 4 January: 19.7 µg/m³, 1.1× usualPyeongtaek, 5 January: 22.2 µg/m³, 1.2× usualPyeongtaek, 6 January: 37.1 µg/m³, 2.0× usualPyeongtaek, 7 January: 12.1 µg/m³, 0.7× usualPyeongtaek, 8 January: 12.6 µg/m³, 0.7× usualPyeongtaek, 9 January: 5.6 µg/m³, 0.3× usualIncheonIncheon, 3 January: 12.9 µg/m³, 0.7× usualIncheon, 4 January: 18.0 µg/m³, 1.0× usualIncheon, 5 January: 21.4 µg/m³, 1.2× usualIncheon, 6 January: 36.6 µg/m³, 2.0× usualIncheon, 7 January: 12.7 µg/m³, 0.7× usualIncheon, 8 January: 16.6 µg/m³, 0.9× usualIncheon, 9 January: 8.1 µg/m³, 0.4× usualAnseongAnseong, 3 January: 13.5 µg/m³, 0.8× usualAnseong, 4 January: 16.1 µg/m³, 0.9× usualAnseong, 5 January: 19.5 µg/m³, 1.1× usualAnseong, 6 January: 36.1 µg/m³, 2.1× usualAnseong, 7 January: 11.6 µg/m³, 0.7× usualAnseong, 8 January: 13.3 µg/m³, 0.8× usualAnseong, 9 January: 5.5 µg/m³, 0.3× usualMungyeongMungyeong, 3 January: 9.4 µg/m³, 0.6× usualMungyeong, 4 January: 10.3 µg/m³, 0.7× usualMungyeong, 5 January: 23.5 µg/m³, 1.6× usualMungyeong, 6 January: 35.9 µg/m³, 2.5× usualMungyeong, 7 January: 9.6 µg/m³, 0.7× usualMungyeong, 8 January: 12.2 µg/m³, 0.8× usualMungyeong, 9 January: 8.4 µg/m³, 0.6× usualBusanBusan, 3 January: 13.2 µg/m³, 0.8× usualBusan, 4 January: 15.0 µg/m³, 0.9× usualBusan, 5 January: 14.6 µg/m³, 0.9× usualBusan, 6 January: 35.7 µg/m³, 2.1× usualBusan, 7 January: 11.8 µg/m³, 0.7× usualBusan, 8 January: 12.6 µg/m³, 0.8× usualBusan, 9 January: 10.7 µg/m³, 0.6× usualAndongAndong, 3 January: 14.5 µg/m³, 0.8× usualAndong, 4 January: 15.8 µg/m³, 0.9× usualAndong, 5 January: 20.8 µg/m³, 1.2× usualAndong, 6 January: 35.5 µg/m³, 2.0× usualAndong, 7 January: 16.0 µg/m³, 0.9× usualAndong, 8 January: 16.8 µg/m³, 1.0× usualAndong, 9 January: 12.3 µg/m³, 0.7× usualHayangHayang, 3 January: 9.7 µg/m³, 0.6× usualHayang, 4 January: 9.1 µg/m³, 0.6× usualHayang, 5 January: 23.5 µg/m³, 1.5× usualHayang, 6 January: 35.3 µg/m³, 2.2× usualHayang, 7 January: 9.1 µg/m³, 0.6× usualHayang, 8 January: 11.1 µg/m³, 0.7× usualHayang, 9 January: 6.7 µg/m³, 0.4× usualNeietsuNeietsu, 3 January: 12.0 µg/m³, 0.7× usualNeietsu, 4 January: 15.8 µg/m³, 0.9× usualNeietsu, 5 January: 15.2 µg/m³, 0.9× usualNeietsu, 6 January: 35.3 µg/m³, 2.1× usualNeietsu, 7 January: 12.1 µg/m³, 0.7× usualNeietsu, 8 January: 14.3 µg/m³, 0.8× usualNeietsu, 9 January: 8.8 µg/m³, 0.5× usualChangsuChangsu, 3 January: 11.0 µg/m³, 0.7× usualChangsu, 4 January: 10.9 µg/m³, 0.7× usualChangsu, 5 January: 24.1 µg/m³, 1.5× usualChangsu, 6 January: 35.1 µg/m³, 2.2× usualChangsu, 7 January: 9.5 µg/m³, 0.6× usualChangsu, 8 January: 11.7 µg/m³, 0.7× usualChangsu, 9 January: 7.6 µg/m³, 0.5× usualGunsanGunsan, 3 January: 12.2 µg/m³, 0.7× usualGunsan, 4 January: 16.6 µg/m³, 1.0× usualGunsan, 5 January: 18.7 µg/m³, 1.1× usualGunsan, 6 January: 35.0 µg/m³, 2.0× usualGunsan, 7 January: 11.4 µg/m³, 0.7× usualGunsan, 8 January: 12.8 µg/m³, 0.7× usualGunsan, 9 January: 7.7 µg/m³, 0.4× usualHwaseong-siHwaseong-si, 3 January: 11.9 µg/m³, 0.7× usualHwaseong-si, 4 January: 16.7 µg/m³, 1.0× usualHwaseong-si, 5 January: 22.6 µg/m³, 1.3× usualHwaseong-si, 6 January: 34.2 µg/m³, 2.0× usualHwaseong-si, 7 January: 9.8 µg/m³, 0.6× usualHwaseong-si, 8 January: 12.3 µg/m³, 0.7× usualHwaseong-si, 9 January: 5.7 µg/m³, 0.3× usualEisenEisen, 3 January: 9.4 µg/m³, 0.7× usualEisen, 4 January: 9.1 µg/m³, 0.6× usualEisen, 5 January: 20.3 µg/m³, 1.4× usualEisen, 6 January: 34.0 µg/m³, 2.4× usualEisen, 7 January: 9.4 µg/m³, 0.7× usualEisen, 8 January: 10.4 µg/m³, 0.7× usualEisen, 9 January: 3.7 µg/m³, 0.3× usualJeju CityJeju City, 3 January: 9.7 µg/m³, 0.7× usualJeju City, 4 January: 10.7 µg/m³, 0.8× usualJeju City, 5 January: 17.3 µg/m³, 1.3× usualJeju City, 6 January: 33.8 µg/m³, 2.6× usualJeju City, 7 January: 11.2 µg/m³, 0.9× usualJeju City, 8 January: 17.6 µg/m³, 1.3× usualJeju City, 9 January: 7.1 µg/m³, 0.5× usualSeogwipoSeogwipo, 3 January: 16.7 µg/m³, 1.4× usualSeogwipo, 4 January: 10.9 µg/m³, 0.9× usualSeogwipo, 5 January: 15.6 µg/m³, 1.3× usualSeogwipo, 6 January: 33.5 µg/m³, 2.7× usualSeogwipo, 7 January: 11.7 µg/m³, 1.0× usualSeogwipo, 8 January: 18.6 µg/m³, 1.5× usualSeogwipo, 9 January: 8.4 µg/m³, 0.7× usualGijangGijang, 3 January: 11.0 µg/m³, 0.7× usualGijang, 4 January: 13.4 µg/m³, 0.9× usualGijang, 5 January: 14.5 µg/m³, 0.9× usualGijang, 6 January: 33.5 µg/m³, 2.2× usualGijang, 7 January: 10.5 µg/m³, 0.7× usualGijang, 8 January: 11.9 µg/m³, 0.8× usualGijang, 9 January: 10.1 µg/m³, 0.7× usualUlsanUlsan, 3 January: 10.8 µg/m³, 0.8× usualUlsan, 4 January: 11.1 µg/m³, 0.8× usualUlsan, 5 January: 14.9 µg/m³, 1.1× usualUlsan, 6 January: 33.3 µg/m³, 2.4× usualUlsan, 7 January: 10.1 µg/m³, 0.7× usualUlsan, 8 January: 10.8 µg/m³, 0.8× usualUlsan, 9 January: 8.8 µg/m³, 0.6× usualSinanSinan, 3 January: 5.0 µg/m³, 0.6× usualSinan, 4 January: 6.0 µg/m³, 0.7× usualSinan, 5 January: 10.4 µg/m³, 1.2× usualSinan, 6 January: 32.8 µg/m³, 3.8× usualSinan, 7 January: 4.0 µg/m³, 0.5× usualSinan, 8 January: 5.1 µg/m³, 0.6× usualSinan, 9 January: 3.8 µg/m³, 0.4× usualYecheonYecheon, 3 January: 9.2 µg/m³, 0.6× usualYecheon, 4 January: 8.8 µg/m³, 0.6× usualYecheon, 5 January: 18.2 µg/m³, 1.2× usualYecheon, 6 January: 32.6 µg/m³, 2.2× usualYecheon, 7 January: 10.4 µg/m³, 0.7× usualYecheon, 8 January: 12.0 µg/m³, 0.8× usualYecheon, 9 January: 8.7 µg/m³, 0.6× usualGaigeturiGaigeturi, 3 January: 8.6 µg/m³, 0.7× usualGaigeturi, 4 January: 9.4 µg/m³, 0.8× usualGaigeturi, 5 January: 15.2 µg/m³, 1.3× usualGaigeturi, 6 January: 32.1 µg/m³, 2.8× usualGaigeturi, 7 January: 11.1 µg/m³, 1.0× usualGaigeturi, 8 January: 16.9 µg/m³, 1.5× usualGaigeturi, 9 January: 10.0 µg/m³, 0.9× usualCheongsong gunCheongsong gun, 3 January: 11.8 µg/m³, 0.8× usualCheongsong gun, 4 January: 10.6 µg/m³, 0.8× usualCheongsong gun, 5 January: 18.3 µg/m³, 1.3× usualCheongsong gun, 6 January: 31.7 µg/m³, 2.3× usualCheongsong gun, 7 January: 10.1 µg/m³, 0.7× usualCheongsong gun, 8 January: 10.6 µg/m³, 0.8× usualCheongsong gun, 9 January: 8.1 µg/m³, 0.6× usualKosongKosong, 3 January: 6.3 µg/m³, 0.7× usualKosong, 4 January: 7.4 µg/m³, 0.8× usualKosong, 5 January: 17.1 µg/m³, 1.9× usualKosong, 6 January: 31.3 µg/m³, 3.5× usualKosong, 7 January: 7.5 µg/m³, 0.8× usualKosong, 8 January: 6.3 µg/m³, 0.7× usualKosong, 9 January: 7.4 µg/m³, 0.8× usualDonghae CityDonghae City, 3 January: 11.7 µg/m³, 0.8× usualDonghae City, 4 January: 14.6 µg/m³, 1.0× usualDonghae City, 5 January: 20.4 µg/m³, 1.4× usualDonghae City, 6 January: 30.6 µg/m³, 2.2× usualDonghae City, 7 January: 11.3 µg/m³, 0.8× usualDonghae City, 8 January: 11.2 µg/m³, 0.8× usualDonghae City, 9 January: 8.5 µg/m³, 0.6× usualSantyokuSantyoku, 3 January: 11.8 µg/m³, 1.0× usualSantyoku, 4 January: 13.9 µg/m³, 1.1× usualSantyoku, 5 January: 18.8 µg/m³, 1.5× usualSantyoku, 6 January: 30.5 µg/m³, 2.5× usualSantyoku, 7 January: 13.4 µg/m³, 1.1× usualSantyoku, 8 January: 12.7 µg/m³, 1.0× usualSantyoku, 9 January: 8.9 µg/m³, 0.7× usualGyeongjuGyeongju, 3 January: 9.1 µg/m³, 0.6× usualGyeongju, 4 January: 8.8 µg/m³, 0.6× usualGyeongju, 5 January: 13.1 µg/m³, 0.9× usualGyeongju, 6 January: 30.4 µg/m³, 2.1× usualGyeongju, 7 January: 8.7 µg/m³, 0.6× usualGyeongju, 8 January: 9.6 µg/m³, 0.7× usualGyeongju, 9 January: 7.5 µg/m³, 0.5× usualGeojeGeoje, 3 January: 9.1 µg/m³, 0.7× usualGeoje, 4 January: 8.7 µg/m³, 0.7× usualGeoje, 5 January: 11.5 µg/m³, 0.9× usualGeoje, 6 January: 30.3 µg/m³, 2.4× usualGeoje, 7 January: 7.8 µg/m³, 0.6× usualGeoje, 8 January: 10.6 µg/m³, 0.9× usualGeoje, 9 January: 8.5 µg/m³, 0.7× usualUngsangUngsang, 3 January: 10.3 µg/m³, 0.8× usualUngsang, 4 January: 12.1 µg/m³, 0.9× usualUngsang, 5 January: 14.0 µg/m³, 1.0× usualUngsang, 6 January: 30.2 µg/m³, 2.2× usualUngsang, 7 January: 7.7 µg/m³, 0.6× usualUngsang, 8 January: 10.1 µg/m³, 0.7× usualUngsang, 9 January: 5.5 µg/m³, 0.4× usualNaesŏNaesŏ, 3 January: 13.1 µg/m³, 0.9× usualNaesŏ, 4 January: 11.8 µg/m³, 0.8× usualNaesŏ, 5 January: 18.7 µg/m³, 1.3× usualNaesŏ, 6 January: 30.0 µg/m³, 2.0× usualNaesŏ, 7 January: 8.2 µg/m³, 0.6× usualNaesŏ, 8 January: 10.8 µg/m³, 0.7× usualNaesŏ, 9 January: 7.4 µg/m³, 0.5× usualKunwiKunwi, 3 January: 14.2 µg/m³, 1.0× usualKunwi, 4 January: 11.8 µg/m³, 0.8× usualKunwi, 5 January: 18.9 µg/m³, 1.3× usualKunwi, 6 January: 29.9 µg/m³, 2.1× usualKunwi, 7 January: 11.0 µg/m³, 0.8× usualKunwi, 8 January: 10.7 µg/m³, 0.7× usualKunwi, 9 January: 6.2 µg/m³, 0.4× usualKoch'angKoch'ang, 3 January: 8.9 µg/m³, 0.7× usualKoch'ang, 4 January: 10.0 µg/m³, 0.8× usualKoch'ang, 5 January: 15.4 µg/m³, 1.2× usualKoch'ang, 6 January: 29.5 µg/m³, 2.3× usualKoch'ang, 7 January: 6.5 µg/m³, 0.5× usualKoch'ang, 8 January: 8.7 µg/m³, 0.7× usualKoch'ang, 9 January: 4.0 µg/m³, 0.3× usualGangneungGangneung, 3 January: 11.5 µg/m³, 0.8× usualGangneung, 4 January: 13.3 µg/m³, 1.0× usualGangneung, 5 January: 20.6 µg/m³, 1.5× usualGangneung, 6 January: 28.3 µg/m³, 2.0× usualGangneung, 7 January: 14.6 µg/m³, 1.0× usualGangneung, 8 January: 14.4 µg/m³, 1.0× usualGangneung, 9 January: 10.8 µg/m³, 0.8× usualYeonggwangYeonggwang, 3 January: 9.0 µg/m³, 0.8× usualYeonggwang, 4 January: 9.0 µg/m³, 0.8× usualYeonggwang, 5 January: 13.5 µg/m³, 1.2× usualYeonggwang, 6 January: 28.0 µg/m³, 2.5× usualYeonggwang, 7 January: 6.4 µg/m³, 0.6× usualYeonggwang, 8 January: 6.5 µg/m³, 0.6× usualYeonggwang, 9 January: 3.8 µg/m³, 0.3× usualSokchoSokcho, 3 January: 5.1 µg/m³, 0.6× usualSokcho, 4 January: 6.3 µg/m³, 0.7× usualSokcho, 5 January: 17.8 µg/m³, 2.0× usualSokcho, 6 January: 26.2 µg/m³, 2.9× usualSokcho, 7 January: 6.7 µg/m³, 0.8× usualSokcho, 8 January: 6.6 µg/m³, 0.7× usualSokcho, 9 January: 5.0 µg/m³, 0.6× usualYangsanYangsan, 3 January: 9.6 µg/m³, 0.7× usualYangsan, 4 January: 12.8 µg/m³, 1.0× usualYangsan, 5 January: 15.4 µg/m³, 1.2× usualYangsan, 6 January: 25.9 µg/m³, 2.0× usualYangsan, 7 January: 8.8 µg/m³, 0.7× usualYangsan, 8 January: 9.2 µg/m³, 0.7× usualYangsan, 9 January: 7.0 µg/m³, 0.5× usual3 Jan456789
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.
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

Every city it reached

CityDaysHighestUsualAbove usual
SinanJeollanam-do, South Korea1 32.86 January8.63.8×
KosongGangwon-do, South Korea1 31.36 January9.03.5×
SokchoGangwon-do, South Korea1 26.26 January8.92.9×
GaigeturiJeju-do, South Korea1 32.16 January11.62.8×
SeogwipoJeju-do, South Korea1 33.56 January12.32.7×
YangguGangwon-do, South Korea1 37.26 January14.12.6×
Jeju CityJeju-do, South Korea1 33.86 January13.12.6×
Bucheon-siGyeonggi-do, South Korea1 42.96 January17.12.5×
YeonggwangJeollanam-do, South Korea1 28.06 January11.22.5×
MungyeongGyeongsangbuk-do, South Korea1 35.96 January14.52.5×
Seongnam-siGyeonggi-do, South Korea1 40.16 January16.32.5×
SantyokuGangwon-do, South Korea1 30.56 January12.42.5×
GeojeGyeongsangnam-do, South Korea1 30.36 January12.42.4×
Anyang-siGyeonggi-do, South Korea1 40.66 January16.72.4×
Hongch’ŏnGangwon-do, South Korea1 43.16 January17.92.4×
UlsanUlsan, South Korea1 33.36 January14.02.4×
EisenGyeongsangbuk-do, South Korea1 34.06 January14.32.4×
Koch'angJeollabuk-do, South Korea1 29.56 January12.62.3×
WanjuJeollabuk-do, South Korea1 38.46 January16.52.3×
Goyang-siGyeonggi-do, South Korea1 40.86 January17.62.3×
ChuncheonGangwon-do, South Korea1 38.06 January16.42.3×
CheorwonGangwon-do, South Korea1 43.46 January19.02.3×
YeonilGyeongsangbuk-do, South Korea1 37.26 January16.32.3×
Cheongsong gunGyeongsangbuk-do, South Korea1 31.76 January13.92.3×
Gimpo-siGyeonggi-do, South Korea1 42.46 January18.72.3×
WabuGyeonggi-do, South Korea1 38.16 January17.02.2×
YecheonGyeongsangbuk-do, South Korea1 32.66 January14.72.2×
PohangGyeongsangbuk-do, South Korea1 40.36 January18.22.2×
UngsangGyeongsangnam-do, South Korea1 30.26 January13.72.2×
Ansan-siGyeonggi-do, South Korea1 37.16 January17.02.2×
ChangsuJeollabuk-do, South Korea1 35.16 January16.12.2×
HayangGyeongsangbuk-do, South Korea1 35.36 January16.22.2×
GimcheonGyeongsangbuk-do, South Korea1 43.06 January19.82.2×
Donghae CityGangwon-do, South Korea1 30.66 January14.12.2×
GijangBusan, South Korea1 33.56 January15.52.2×
SuwonGyeonggi-do, South Korea1 39.76 January18.42.2×
Yangp'yŏngGyeonggi-do, South Korea1 45.26 January21.22.1×
GyeongjuGyeongsangbuk-do, South Korea1 30.46 January14.32.1×
BusanBusan, South Korea1 35.76 January16.82.1×
OsanGyeonggi-do, South Korea1 37.36 January17.62.1×
KunwiGyeongsangbuk-do, South Korea1 29.96 January14.42.1×
Icheon-siGyeonggi-do, South Korea1 41.36 January19.92.1×
NeietsuGangwon-do, South Korea1 35.36 January17.12.1×
AnseongGyeonggi-do, South Korea1 36.16 January17.62.1×
PyeongtaekGyeonggi-do, South Korea1 37.16 January18.12.0×
GwangjuGyeonggi-do, South Korea1 40.36 January19.82.0×
YeojuGyeonggi-do, South Korea1 42.76 January21.02.0×
IncheonIncheon, South Korea1 36.66 January18.02.0×
AndongGyeongsangbuk-do, South Korea1 35.56 January17.52.0×
NaesŏGyeongsangnam-do, South Korea1 30.06 January14.82.0×
Hwaseong-siGyeonggi-do, South Korea1 34.26 January16.92.0×
YangsanGyeongsangnam-do, South Korea1 25.96 January12.82.0×
GunsanJeollabuk-do, South Korea1 35.06 January17.32.0×
GangneungGangwon-do, South Korea1 28.36 January14.02.0×
PubalGyeonggi-do, South Korea1 47.36 January23.52.0×

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 20 of 43 episodes in South Korea since our records began, by cities reached.

Bars: cities reached; colour: the level of the episode's highest daily reading. All 43.

Use this page

SmogRank, South Korea, January 2025: 55 cities with PM2.5 at twice their usual or more, 6 January 2025, smogrank.com/episodes/2025-01-south-korea (accessed 3 October 2026).

Download top 10 (PNG)

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.