SmogRank / Episodes / South Korea

South Korea, February 2025

For 3 days, from 14 to 16 February 2025, 132 cities in South Korea had PM2.5 at least twice their usual for the time of year. The worst reading was Yeoju, Gyeonggi-do, South Korea: 71.9 µg/m³ on 15 February, about 3.8× its usual 18.9.

No cause namedWe have no fire or smoke records for these days, so we only say what the measurements show.
Cities reached132in 1 country
Days314 to 16 February 2025
Worst day16 February128 cities counted
Furthest above usual3.8×Icheon-si

Day by day

16 February 128 cities at twice their usual or more
HadongBeolgyoHwasunSinhyeonTsushimaIkiMatsuuraKaratsuSaseboImarichō-kōItoshimaMaebaru-chūōKogaSaikaiMunakataTakuFukuokaTakeoUreshinomachi-shimojukuKogaWakasugiHigashigōKasugaNakamaKashimaNōgataKanzakimachi-kanzakiSagaŌmuraTogitsuIizukaKitakyushuShimonosekiTosuOgōriKurumeNagatoYanagawaTagawaIsahayaChikugoKandaMineTanushimarumachi-toyokiYukuhashiŌmutaUkihaOnodaYameAraoHagiUbeTamanaBuzenHitaYamagaYamaguchiNakatsuUekimachi-mōnoKikuchiHōfuMasudaŌzuAsoShūnanHamadaYufuKudamatsuBeppuGōtsuchōKunisakiHikariŌitaTsurusakiYanaiŌtakeIwakuniMieŌdachō-ōdaUsukiHiroshimaGionYaeTsukumiuraIzumoSaikiKureHigashihiroshimaYawatahamaIyoMatsuyamaUwajimaJeongeupUlsanJumunjinGanghwa-gunKuryeTaesal-liGeojeGimcheonKimjeBoryeongHanamGwangyangJeonjuTongyeongIncheonGijangGimpo-siKoesanGoseongGumiAsanPohangBuanBusanWaegwanYeonilHongseongT’aebaekTangjinYesanWabuNamyangjuDonghae CityGyeongjuGyeongsan-siYeongdongBoseongChangsuChangnyeongGwangmyeongNaesŏAndongHayangGoyang-siKinzanGunsanMiryangNamsaNangenSangjuSuncheonYeongjuUijeongbu-siUngsangAnsan-siChangwonChinjuJungpyongHwacheonKunwiGuri-siOkcheonSeonghwanDaejeonYangsanYangjuHaenamMokpoYŏnmuChinch'ŏnCheongju-siCheorwonChungjuIksanGangneungGapyeongKimhaeKwangyangMungyeongBucheon-siDaeguWanjuYangguNeietsuSeoulJinan-gunCheongsong gunHwaseong-siImsilMunsanSantyokuWŏnjuEisenAnyang-siSeogwipoSejongHwawŏnSeongnam-siCheonanChuncheonGongjuGwangjuNonsanGaigeturiKoch'angYeongamHwadoPubalYeosuHongch’ŏnMasanPyeongtaekYecheonJeju CityOsanMuanSeosanSuwonAnseongJangseongGwangjuKosongSokchoSinanYeonggwangYangp'yŏngJangheungNajuDamyangIcheon-siBuyeoYeoju
11 Feb1213141516171819
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

Icheon-siIcheon-si, 11 February: 31.8 µg/m³, 1.9× usualIcheon-si, 12 February: 29.8 µg/m³, 1.7× usualIcheon-si, 13 February: 7.2 µg/m³, 0.4× usualIcheon-si, 14 February: 30.6 µg/m³, 1.8× usualIcheon-si, 15 February: 58.7 µg/m³, 3.4× usualIcheon-si, 16 February: 65.7 µg/m³, 3.8× usualIcheon-si, 17 February: 6.8 µg/m³, 0.4× usualIcheon-si, 18 February: 8.2 µg/m³, 0.5× usualIcheon-si, 19 February: 8.8 µg/m³, 0.5× usualMunsanMunsan, 11 February: 39.1 µg/m³, 2.1× usualMunsan, 12 February: 43.6 µg/m³, 2.4× usualMunsan, 13 February: 12.2 µg/m³, 0.7× usualMunsan, 14 February: 36.0 µg/m³, 2.0× usualMunsan, 15 February: 51.7 µg/m³, 2.8× usualMunsan, 16 February: 50.0 µg/m³, 2.7× usualMunsan, 17 February: 10.1 µg/m³, 0.6× usualMunsan, 18 February: 11.7 µg/m³, 0.6× usualMunsan, 19 February: 14.0 µg/m³, 0.8× usualPyeongtaekPyeongtaek, 11 February: 34.7 µg/m³, 2.0× usualPyeongtaek, 12 February: 28.3 µg/m³, 1.7× usualPyeongtaek, 13 February: 7.5 µg/m³, 0.4× usualPyeongtaek, 14 February: 29.2 µg/m³, 1.7× usualPyeongtaek, 15 February: 46.3 µg/m³, 2.7× usualPyeongtaek, 16 February: 50.9 µg/m³, 3.0× usualPyeongtaek, 17 February: 6.9 µg/m³, 0.4× usualPyeongtaek, 18 February: 9.0 µg/m³, 0.5× usualPyeongtaek, 19 February: 8.4 µg/m³, 0.5× usualBuyeoBuyeo, 11 February: 33.0 µg/m³, 2.4× usualBuyeo, 12 February: 23.0 µg/m³, 1.7× usualBuyeo, 13 February: 10.6 µg/m³, 0.8× usualBuyeo, 14 February: 26.4 µg/m³, 2.0× usualBuyeo, 15 February: 39.0 µg/m³, 2.9× usualBuyeo, 16 February: 50.9 µg/m³, 3.8× usualBuyeo, 17 February: 10.5 µg/m³, 0.8× usualBuyeo, 18 February: 8.4 µg/m³, 0.6× usualBuyeo, 19 February: 9.3 µg/m³, 0.7× usualSejongSejong, 11 February: 35.1 µg/m³, 2.1× usualSejong, 12 February: 34.4 µg/m³, 2.0× usualSejong, 13 February: 8.1 µg/m³, 0.5× usualSejong, 14 February: 24.9 µg/m³, 1.5× usualSejong, 15 February: 39.6 µg/m³, 2.4× usualSejong, 16 February: 49.4 µg/m³, 2.9× usualSejong, 17 February: 10.7 µg/m³, 0.6× usualSejong, 18 February: 8.7 µg/m³, 0.5× usualSejong, 19 February: 8.8 µg/m³, 0.5× usualSeosanSeosan, 11 February: 29.5 µg/m³, 2.1× usualSeosan, 12 February: 19.5 µg/m³, 1.4× usualSeosan, 13 February: 9.9 µg/m³, 0.7× usualSeosan, 14 February: 27.0 µg/m³, 1.9× usualSeosan, 15 February: 30.8 µg/m³, 2.2× usualSeosan, 16 February: 45.8 µg/m³, 3.2× usualSeosan, 17 February: 7.6 µg/m³, 0.5× usualSeosan, 18 February: 4.8 µg/m³, 0.3× usualSeosan, 19 February: 7.3 µg/m³, 0.5× usualUijeongbu-siUijeongbu-si, 11 February: 31.2 µg/m³, 1.8× usualUijeongbu-si, 12 February: 27.9 µg/m³, 1.6× usualUijeongbu-si, 13 February: 8.2 µg/m³, 0.5× usualUijeongbu-si, 14 February: 32.6 µg/m³, 1.8× usualUijeongbu-si, 15 February: 42.6 µg/m³, 2.4× usualUijeongbu-si, 16 February: 45.3 µg/m³, 2.5× usualUijeongbu-si, 17 February: 6.6 µg/m³, 0.4× usualUijeongbu-si, 18 February: 7.7 µg/m³, 0.4× usualUijeongbu-si, 19 February: 8.8 µg/m³, 0.5× usualGimpo-siGimpo-si, 11 February: 36.4 µg/m³, 1.9× usualGimpo-si, 12 February: 35.4 µg/m³, 1.8× usualGimpo-si, 13 February: 10.6 µg/m³, 0.5× usualGimpo-si, 14 February: 31.0 µg/m³, 1.6× usualGimpo-si, 15 February: 41.1 µg/m³, 2.1× usualGimpo-si, 16 February: 44.8 µg/m³, 2.3× usualGimpo-si, 17 February: 9.8 µg/m³, 0.5× usualGimpo-si, 18 February: 10.3 µg/m³, 0.5× usualGimpo-si, 19 February: 11.3 µg/m³, 0.6× usualHwaseong-siHwaseong-si, 11 February: 29.9 µg/m³, 1.9× usualHwaseong-si, 12 February: 24.4 µg/m³, 1.5× usualHwaseong-si, 13 February: 7.4 µg/m³, 0.5× usualHwaseong-si, 14 February: 29.9 µg/m³, 1.9× usualHwaseong-si, 15 February: 43.4 µg/m³, 2.7× usualHwaseong-si, 16 February: 44.4 µg/m³, 2.8× usualHwaseong-si, 17 February: 5.8 µg/m³, 0.4× usualHwaseong-si, 18 February: 6.2 µg/m³, 0.4× usualHwaseong-si, 19 February: 7.2 µg/m³, 0.5× usualNajuNaju, 11 February: 28.2 µg/m³, 2.3× usualNaju, 12 February: 15.6 µg/m³, 1.3× usualNaju, 13 February: 10.0 µg/m³, 0.8× usualNaju, 14 February: 16.7 µg/m³, 1.4× usualNaju, 15 February: 31.5 µg/m³, 2.6× usualNaju, 16 February: 43.7 µg/m³, 3.6× usualNaju, 17 February: 13.0 µg/m³, 1.1× usualNaju, 18 February: 7.3 µg/m³, 0.6× usualNaju, 19 February: 6.8 µg/m³, 0.6× usualYangjuYangju, 11 February: 31.9 µg/m³, 1.9× usualYangju, 12 February: 29.7 µg/m³, 1.8× usualYangju, 13 February: 7.3 µg/m³, 0.4× usualYangju, 14 February: 32.5 µg/m³, 1.9× usualYangju, 15 February: 41.6 µg/m³, 2.5× usualYangju, 16 February: 43.0 µg/m³, 2.6× usualYangju, 17 February: 5.4 µg/m³, 0.3× usualYangju, 18 February: 7.0 µg/m³, 0.4× usualYangju, 19 February: 9.3 µg/m³, 0.6× usualOsanOsan, 11 February: 27.4 µg/m³, 1.6× usualOsan, 12 February: 27.1 µg/m³, 1.6× usualOsan, 13 February: 8.5 µg/m³, 0.5× usualOsan, 14 February: 33.1 µg/m³, 1.9× usualOsan, 15 February: 48.5 µg/m³, 2.8× usualOsan, 16 February: 53.6 µg/m³, 3.1× usualOsan, 17 February: 9.0 µg/m³, 0.5× usualOsan, 18 February: 9.1 µg/m³, 0.5× usualOsan, 19 February: 11.2 µg/m³, 0.7× usualAnseongAnseong, 11 February: 27.9 µg/m³, 1.7× usualAnseong, 12 February: 28.7 µg/m³, 1.8× usualAnseong, 13 February: 7.9 µg/m³, 0.5× usualAnseong, 14 February: 30.5 µg/m³, 1.9× usualAnseong, 15 February: 49.1 µg/m³, 3.1× usualAnseong, 16 February: 51.5 µg/m³, 3.2× usualAnseong, 17 February: 9.2 µg/m³, 0.6× usualAnseong, 18 February: 9.1 µg/m³, 0.6× usualAnseong, 19 February: 8.6 µg/m³, 0.5× usualSeoulSeoul, 11 February: 33.1 µg/m³, 1.8× usualSeoul, 12 February: 29.7 µg/m³, 1.6× usualSeoul, 13 February: 9.8 µg/m³, 0.5× usualSeoul, 14 February: 34.4 µg/m³, 1.9× usualSeoul, 15 February: 44.0 µg/m³, 2.4× usualSeoul, 16 February: 49.7 µg/m³, 2.7× usualSeoul, 17 February: 9.3 µg/m³, 0.5× usualSeoul, 18 February: 10.0 µg/m³, 0.5× usualSeoul, 19 February: 10.8 µg/m³, 0.6× usualAnyang-siAnyang-si, 11 February: 28.7 µg/m³, 1.7× usualAnyang-si, 12 February: 27.6 µg/m³, 1.7× usualAnyang-si, 13 February: 9.0 µg/m³, 0.5× usualAnyang-si, 14 February: 31.5 µg/m³, 1.9× usualAnyang-si, 15 February: 40.1 µg/m³, 2.4× usualAnyang-si, 16 February: 47.0 µg/m³, 2.8× usualAnyang-si, 17 February: 8.9 µg/m³, 0.5× usualAnyang-si, 18 February: 10.6 µg/m³, 0.6× usualAnyang-si, 19 February: 11.5 µg/m³, 0.7× usualYeojuYeoju, 11 February: 29.7 µg/m³, 1.6× usualYeoju, 12 February: 30.0 µg/m³, 1.6× usualYeoju, 13 February: 10.1 µg/m³, 0.5× usualYeoju, 14 February: 33.3 µg/m³, 1.8× usualYeoju, 15 February: 71.9 µg/m³, 3.8× usualYeoju, 16 February: 71.3 µg/m³, 3.8× usualYeoju, 17 February: 10.9 µg/m³, 0.6× usualYeoju, 18 February: 9.0 µg/m³, 0.5× usualYeoju, 19 February: 11.6 µg/m³, 0.6× usualYangp'yŏngYangp'yŏng, 11 February: 30.9 µg/m³, 1.6× usualYangp'yŏng, 12 February: 27.1 µg/m³, 1.4× usualYangp'yŏng, 13 February: 10.9 µg/m³, 0.6× usualYangp'yŏng, 14 February: 31.9 µg/m³, 1.6× usualYangp'yŏng, 15 February: 64.9 µg/m³, 3.3× usualYangp'yŏng, 16 February: 67.6 µg/m³, 3.5× usualYangp'yŏng, 17 February: 10.2 µg/m³, 0.5× usualYangp'yŏng, 18 February: 9.7 µg/m³, 0.5× usualYangp'yŏng, 19 February: 12.6 µg/m³, 0.6× usualPubalPubal, 11 February: 39.8 µg/m³, 1.8× usualPubal, 12 February: 37.5 µg/m³, 1.7× usualPubal, 13 February: 13.9 µg/m³, 0.6× usualPubal, 14 February: 31.0 µg/m³, 1.4× usualPubal, 15 February: 59.0 µg/m³, 2.6× usualPubal, 16 February: 66.0 µg/m³, 3.0× usualPubal, 17 February: 10.3 µg/m³, 0.5× usualPubal, 18 February: 9.4 µg/m³, 0.4× usualPubal, 19 February: 12.2 µg/m³, 0.5× usualWŏnjuWŏnju, 11 February: 35.4 µg/m³, 1.6× usualWŏnju, 12 February: 36.7 µg/m³, 1.6× usualWŏnju, 13 February: 12.9 µg/m³, 0.6× usualWŏnju, 14 February: 33.7 µg/m³, 1.5× usualWŏnju, 15 February: 62.2 µg/m³, 2.8× usualWŏnju, 16 February: 63.2 µg/m³, 2.8× usualWŏnju, 17 February: 17.8 µg/m³, 0.8× usualWŏnju, 18 February: 13.3 µg/m³, 0.6× usualWŏnju, 19 February: 15.5 µg/m³, 0.7× usualGwangjuGwangju, 11 February: 31.1 µg/m³, 1.8× usualGwangju, 12 February: 32.2 µg/m³, 1.9× usualGwangju, 13 February: 9.6 µg/m³, 0.6× usualGwangju, 14 February: 30.3 µg/m³, 1.8× usualGwangju, 15 February: 52.8 µg/m³, 3.1× usualGwangju, 16 February: 56.8 µg/m³, 3.3× usualGwangju, 17 February: 9.7 µg/m³, 0.6× usualGwangju, 18 February: 9.3 µg/m³, 0.5× usualGwangju, 19 February: 11.9 µg/m³, 0.7× usualSeonghwanSeonghwan, 11 February: 39.7 µg/m³, 1.8× usualSeonghwan, 12 February: 34.6 µg/m³, 1.6× usualSeonghwan, 13 February: 10.0 µg/m³, 0.5× usualSeonghwan, 14 February: 33.5 µg/m³, 1.5× usualSeonghwan, 15 February: 55.7 µg/m³, 2.6× usualSeonghwan, 16 February: 55.4 µg/m³, 2.6× usualSeonghwan, 17 February: 12.1 µg/m³, 0.6× usualSeonghwan, 18 February: 10.8 µg/m³, 0.5× usualSeonghwan, 19 February: 10.8 µg/m³, 0.5× usualSuwonSuwon, 11 February: 30.6 µg/m³, 1.8× usualSuwon, 12 February: 28.3 µg/m³, 1.7× usualSuwon, 13 February: 9.7 µg/m³, 0.6× usualSuwon, 14 February: 31.5 µg/m³, 1.9× usualSuwon, 15 February: 46.8 µg/m³, 2.8× usualSuwon, 16 February: 54.8 µg/m³, 3.2× usualSuwon, 17 February: 9.9 µg/m³, 0.6× usualSuwon, 18 February: 9.8 µg/m³, 0.6× usualSuwon, 19 February: 11.8 µg/m³, 0.7× usualHwadoHwado, 11 February: 27.8 µg/m³, 1.5× usualHwado, 12 February: 29.3 µg/m³, 1.6× usualHwado, 13 February: 8.6 µg/m³, 0.5× usualHwado, 14 February: 31.8 µg/m³, 1.7× usualHwado, 15 February: 50.6 µg/m³, 2.8× usualHwado, 16 February: 54.6 µg/m³, 3.0× usualHwado, 17 February: 7.6 µg/m³, 0.4× usualHwado, 18 February: 7.9 µg/m³, 0.4× usualHwado, 19 February: 10.4 µg/m³, 0.6× usualYeongjuYeongju, 11 February: 34.6 µg/m³, 1.6× usualYeongju, 12 February: 36.2 µg/m³, 1.7× usualYeongju, 13 February: 11.6 µg/m³, 0.5× usualYeongju, 14 February: 25.8 µg/m³, 1.2× usualYeongju, 15 February: 45.3 µg/m³, 2.1× usualYeongju, 16 February: 53.8 µg/m³, 2.5× usualYeongju, 17 February: 19.8 µg/m³, 0.9× usualYeongju, 18 February: 12.6 µg/m³, 0.6× usualYeongju, 19 February: 13.7 µg/m³, 0.6× usualHongch’ŏnHongch’ŏn, 11 February: 26.6 µg/m³, 1.5× usualHongch’ŏn, 12 February: 26.9 µg/m³, 1.5× usualHongch’ŏn, 13 February: 6.6 µg/m³, 0.4× usualHongch’ŏn, 14 February: 27.4 µg/m³, 1.5× usualHongch’ŏn, 15 February: 51.1 µg/m³, 2.8× usualHongch’ŏn, 16 February: 53.3 µg/m³, 3.0× usualHongch’ŏn, 17 February: 9.4 µg/m³, 0.5× usualHongch’ŏn, 18 February: 8.5 µg/m³, 0.5× usualHongch’ŏn, 19 February: 10.0 µg/m³, 0.6× usualCheorwonCheorwon, 11 February: 31.7 µg/m³, 1.6× usualCheorwon, 12 February: 33.6 µg/m³, 1.7× usualCheorwon, 13 February: 12.3 µg/m³, 0.6× usualCheorwon, 14 February: 31.6 µg/m³, 1.6× usualCheorwon, 15 February: 46.5 µg/m³, 2.4× usualCheorwon, 16 February: 53.1 µg/m³, 2.7× usualCheorwon, 17 February: 14.4 µg/m³, 0.7× usualCheorwon, 18 February: 16.1 µg/m³, 0.8× usualCheorwon, 19 February: 16.5 µg/m³, 0.8× usualChinch'ŏnChinch'ŏn, 11 February: 28.8 µg/m³, 1.6× usualChinch'ŏn, 12 February: 32.4 µg/m³, 1.8× usualChinch'ŏn, 13 February: 8.2 µg/m³, 0.4× usualChinch'ŏn, 14 February: 23.7 µg/m³, 1.3× usualChinch'ŏn, 15 February: 47.4 µg/m³, 2.6× usualChinch'ŏn, 16 February: 50.5 µg/m³, 2.7× usualChinch'ŏn, 17 February: 11.9 µg/m³, 0.6× usualChinch'ŏn, 18 February: 9.4 µg/m³, 0.5× usualChinch'ŏn, 19 February: 9.7 µg/m³, 0.5× usualChungjuChungju, 11 February: 28.2 µg/m³, 1.5× usualChungju, 12 February: 25.5 µg/m³, 1.4× usualChungju, 13 February: 11.5 µg/m³, 0.6× usualChungju, 14 February: 26.6 µg/m³, 1.4× usualChungju, 15 February: 49.1 µg/m³, 2.6× usualChungju, 16 February: 49.8 µg/m³, 2.7× usualChungju, 17 February: 19.4 µg/m³, 1.0× usualChungju, 18 February: 11.9 µg/m³, 0.6× usualChungju, 19 February: 12.9 µg/m³, 0.7× usualCheongju-siCheongju-si, 11 February: 36.6 µg/m³, 2.0× usualCheongju-si, 12 February: 30.6 µg/m³, 1.7× usualCheongju-si, 13 February: 9.6 µg/m³, 0.5× usualCheongju-si, 14 February: 24.2 µg/m³, 1.3× usualCheongju-si, 15 February: 43.8 µg/m³, 2.4× usualCheongju-si, 16 February: 49.2 µg/m³, 2.7× usualCheongju-si, 17 February: 13.5 µg/m³, 0.7× usualCheongju-si, 18 February: 13.1 µg/m³, 0.7× usualCheongju-si, 19 February: 10.7 µg/m³, 0.6× usualKinzanKinzan, 11 February: 29.5 µg/m³, 1.5× usualKinzan, 12 February: 24.9 µg/m³, 1.3× usualKinzan, 13 February: 10.3 µg/m³, 0.5× usualKinzan, 14 February: 28.8 µg/m³, 1.5× usualKinzan, 15 February: 41.6 µg/m³, 2.1× usualKinzan, 16 February: 49.0 µg/m³, 2.5× usualKinzan, 17 February: 18.5 µg/m³, 0.9× usualKinzan, 18 February: 11.4 µg/m³, 0.6× usualKinzan, 19 February: 12.1 µg/m³, 0.6× usualJungpyongJungpyong, 11 February: 28.1 µg/m³, 1.5× usualJungpyong, 12 February: 31.5 µg/m³, 1.7× usualJungpyong, 13 February: 8.8 µg/m³, 0.5× usualJungpyong, 14 February: 25.9 µg/m³, 1.4× usualJungpyong, 15 February: 47.3 µg/m³, 2.5× usualJungpyong, 16 February: 48.9 µg/m³, 2.6× usualJungpyong, 17 February: 11.4 µg/m³, 0.6× usualJungpyong, 18 February: 9.6 µg/m³, 0.5× usualJungpyong, 19 February: 10.1 µg/m³, 0.5× usualGuri-siGuri-si, 11 February: 30.4 µg/m³, 1.6× usualGuri-si, 12 February: 27.0 µg/m³, 1.4× usualGuri-si, 13 February: 9.9 µg/m³, 0.5× usualGuri-si, 14 February: 32.4 µg/m³, 1.7× usualGuri-si, 15 February: 44.7 µg/m³, 2.4× usualGuri-si, 16 February: 48.6 µg/m³, 2.6× usualGuri-si, 17 February: 9.5 µg/m³, 0.5× usualGuri-si, 18 February: 10.1 µg/m³, 0.5× usualGuri-si, 19 February: 11.2 µg/m³, 0.6× usualChuncheonChuncheon, 11 February: 26.7 µg/m³, 1.6× usualChuncheon, 12 February: 29.8 µg/m³, 1.8× usualChuncheon, 13 February: 10.0 µg/m³, 0.6× usualChuncheon, 14 February: 26.6 µg/m³, 1.6× usualChuncheon, 15 February: 48.5 µg/m³, 2.9× usualChuncheon, 16 February: 46.5 µg/m³, 2.8× usualChuncheon, 17 February: 13.3 µg/m³, 0.8× usualChuncheon, 18 February: 10.2 µg/m³, 0.6× usualChuncheon, 19 February: 11.0 µg/m³, 0.7× usualOkcheonOkcheon, 11 February: 27.1 µg/m³, 1.4× usualOkcheon, 12 February: 25.3 µg/m³, 1.3× usualOkcheon, 13 February: 8.1 µg/m³, 0.4× usualOkcheon, 14 February: 21.3 µg/m³, 1.1× usualOkcheon, 15 February: 37.5 µg/m³, 2.0× usualOkcheon, 16 February: 48.2 µg/m³, 2.6× usualOkcheon, 17 February: 8.3 µg/m³, 0.4× usualOkcheon, 18 February: 9.0 µg/m³, 0.5× usualOkcheon, 19 February: 8.4 µg/m³, 0.4× usualCheonanCheonan, 11 February: 33.1 µg/m³, 2.0× usualCheonan, 12 February: 28.0 µg/m³, 1.7× usualCheonan, 13 February: 8.6 µg/m³, 0.5× usualCheonan, 14 February: 26.9 µg/m³, 1.6× usualCheonan, 15 February: 43.8 µg/m³, 2.6× usualCheonan, 16 February: 47.9 µg/m³, 2.9× usualCheonan, 17 February: 8.8 µg/m³, 0.5× usualCheonan, 18 February: 8.8 µg/m³, 0.5× usualCheonan, 19 February: 10.3 µg/m³, 0.6× usualKoesanKoesan, 11 February: 26.4 µg/m³, 1.3× usualKoesan, 12 February: 25.3 µg/m³, 1.2× usualKoesan, 13 February: 12.4 µg/m³, 0.6× usualKoesan, 14 February: 25.5 µg/m³, 1.2× usualKoesan, 15 February: 42.5 µg/m³, 2.1× usualKoesan, 16 February: 47.6 µg/m³, 2.3× usualKoesan, 17 February: 16.7 µg/m³, 0.8× usualKoesan, 18 February: 12.3 µg/m³, 0.6× usualKoesan, 19 February: 12.8 µg/m³, 0.6× usualGapyeongGapyeong, 11 February: 21.6 µg/m³, 1.2× usualGapyeong, 12 February: 26.2 µg/m³, 1.5× usualGapyeong, 13 February: 8.7 µg/m³, 0.5× usualGapyeong, 14 February: 28.3 µg/m³, 1.6× usualGapyeong, 15 February: 45.7 µg/m³, 2.6× usualGapyeong, 16 February: 47.5 µg/m³, 2.7× usualGapyeong, 17 February: 8.5 µg/m³, 0.5× usualGapyeong, 18 February: 8.3 µg/m³, 0.5× usualGapyeong, 19 February: 10.8 µg/m³, 0.6× usualGunsanGunsan, 11 February: 27.8 µg/m³, 1.5× usualGunsan, 12 February: 21.9 µg/m³, 1.2× usualGunsan, 13 February: 10.7 µg/m³, 0.6× usualGunsan, 14 February: 21.9 µg/m³, 1.2× usualGunsan, 15 February: 40.8 µg/m³, 2.2× usualGunsan, 16 February: 47.4 µg/m³, 2.5× usualGunsan, 17 February: 10.9 µg/m³, 0.6× usualGunsan, 18 February: 10.7 µg/m³, 0.6× usualGunsan, 19 February: 9.6 µg/m³, 0.5× usualSeongnam-siSeongnam-si, 11 February: 27.0 µg/m³, 1.7× usualSeongnam-si, 12 February: 26.4 µg/m³, 1.6× usualSeongnam-si, 13 February: 7.8 µg/m³, 0.5× usualSeongnam-si, 14 February: 29.7 µg/m³, 1.8× usualSeongnam-si, 15 February: 38.7 µg/m³, 2.4× usualSeongnam-si, 16 February: 47.4 µg/m³, 2.9× usualSeongnam-si, 17 February: 8.3 µg/m³, 0.5× usualSeongnam-si, 18 February: 8.9 µg/m³, 0.5× usualSeongnam-si, 19 February: 9.8 µg/m³, 0.6× usualMasanMasan, 11 February: 28.2 µg/m³, 1.8× usualMasan, 12 February: 18.3 µg/m³, 1.1× usualMasan, 13 February: 10.3 µg/m³, 0.6× usualMasan, 14 February: 19.9 µg/m³, 1.2× usualMasan, 15 February: 37.6 µg/m³, 2.4× usualMasan, 16 February: 47.2 µg/m³, 3.0× usualMasan, 17 February: 15.3 µg/m³, 1.0× usualMasan, 18 February: 10.7 µg/m³, 0.7× usualMasan, 19 February: 9.0 µg/m³, 0.6× usualKimjeKimje, 11 February: 27.1 µg/m³, 1.3× usualKimje, 12 February: 18.0 µg/m³, 0.9× usualKimje, 13 February: 8.2 µg/m³, 0.4× usualKimje, 14 February: 19.8 µg/m³, 0.9× usualKimje, 15 February: 43.8 µg/m³, 2.1× usualKimje, 16 February: 47.0 µg/m³, 2.2× usualKimje, 17 February: 9.6 µg/m³, 0.5× usualKimje, 18 February: 9.4 µg/m³, 0.4× usualKimje, 19 February: 9.0 µg/m³, 0.4× usualNonsanNonsan, 11 February: 23.6 µg/m³, 1.5× usualNonsan, 12 February: 23.8 µg/m³, 1.5× usualNonsan, 13 February: 9.0 µg/m³, 0.6× usualNonsan, 14 February: 23.5 µg/m³, 1.5× usualNonsan, 15 February: 36.3 µg/m³, 2.3× usualNonsan, 16 February: 46.7 µg/m³, 2.9× usualNonsan, 17 February: 13.5 µg/m³, 0.8× usualNonsan, 18 February: 9.6 µg/m³, 0.6× usualNonsan, 19 February: 8.4 µg/m³, 0.5× usualGwangmyeongGwangmyeong, 11 February: 34.1 µg/m³, 1.9× usualGwangmyeong, 12 February: 31.2 µg/m³, 1.7× usualGwangmyeong, 13 February: 10.8 µg/m³, 0.6× usualGwangmyeong, 14 February: 34.5 µg/m³, 1.9× usualGwangmyeong, 15 February: 42.6 µg/m³, 2.3× usualGwangmyeong, 16 February: 46.6 µg/m³, 2.5× usualGwangmyeong, 17 February: 9.8 µg/m³, 0.5× usualGwangmyeong, 18 February: 10.2 µg/m³, 0.6× usualGwangmyeong, 19 February: 11.4 µg/m³, 0.6× usualIksanIksan, 11 February: 27.7 µg/m³, 1.6× usualIksan, 12 February: 19.3 µg/m³, 1.1× usualIksan, 13 February: 8.4 µg/m³, 0.5× usualIksan, 14 February: 23.4 µg/m³, 1.4× usualIksan, 15 February: 45.0 µg/m³, 2.6× usualIksan, 16 February: 46.4 µg/m³, 2.7× usualIksan, 17 February: 11.3 µg/m³, 0.7× usualIksan, 18 February: 8.0 µg/m³, 0.5× usualIksan, 19 February: 8.2 µg/m³, 0.5× usualGumiGumi, 11 February: 35.9 µg/m³, 1.8× usualGumi, 12 February: 34.3 µg/m³, 1.7× usualGumi, 13 February: 16.1 µg/m³, 0.8× usualGumi, 14 February: 29.1 µg/m³, 1.5× usualGumi, 15 February: 46.1 µg/m³, 2.3× usualGumi, 16 February: 44.3 µg/m³, 2.2× usualGumi, 17 February: 24.2 µg/m³, 1.2× usualGumi, 18 February: 17.5 µg/m³, 0.9× usualGumi, 19 February: 16.5 µg/m³, 0.8× usualBucheon-siBucheon-si, 11 February: 32.0 µg/m³, 1.9× usualBucheon-si, 12 February: 29.7 µg/m³, 1.7× usualBucheon-si, 13 February: 10.5 µg/m³, 0.6× usualBucheon-si, 14 February: 33.6 µg/m³, 2.0× usualBucheon-si, 15 February: 42.8 µg/m³, 2.5× usualBucheon-si, 16 February: 46.1 µg/m³, 2.7× usualBucheon-si, 17 February: 8.4 µg/m³, 0.5× usualBucheon-si, 18 February: 9.2 µg/m³, 0.5× usualBucheon-si, 19 February: 9.4 µg/m³, 0.5× usualYeongdongYeongdong, 11 February: 28.7 µg/m³, 1.5× usualYeongdong, 12 February: 25.2 µg/m³, 1.3× usualYeongdong, 13 February: 10.6 µg/m³, 0.6× usualYeongdong, 14 February: 27.5 µg/m³, 1.5× usualYeongdong, 15 February: 41.1 µg/m³, 2.2× usualYeongdong, 16 February: 46.0 µg/m³, 2.4× usualYeongdong, 17 February: 16.8 µg/m³, 0.9× usualYeongdong, 18 February: 11.2 µg/m³, 0.6× usualYeongdong, 19 February: 12.0 µg/m³, 0.6× usualSangjuSangju, 11 February: 28.7 µg/m³, 1.6× usualSangju, 12 February: 25.7 µg/m³, 1.4× usualSangju, 13 February: 11.2 µg/m³, 0.6× usualSangju, 14 February: 24.5 µg/m³, 1.3× usualSangju, 15 February: 37.8 µg/m³, 2.0× usualSangju, 16 February: 45.9 µg/m³, 2.5× usualSangju, 17 February: 17.7 µg/m³, 1.0× usualSangju, 18 February: 12.3 µg/m³, 0.7× usualSangju, 19 February: 12.2 µg/m³, 0.7× usualYangguYanggu, 11 February: 20.8 µg/m³, 1.2× usualYanggu, 12 February: 21.6 µg/m³, 1.3× usualYanggu, 13 February: 7.4 µg/m³, 0.4× usualYanggu, 14 February: 21.2 µg/m³, 1.3× usualYanggu, 15 February: 41.4 µg/m³, 2.5× usualYanggu, 16 February: 45.7 µg/m³, 2.7× usualYanggu, 17 February: 10.6 µg/m³, 0.6× usualYanggu, 18 February: 9.3 µg/m³, 0.6× usualYanggu, 19 February: 11.3 µg/m³, 0.7× usualAnsan-siAnsan-si, 11 February: 26.6 µg/m³, 1.5× usualAnsan-si, 12 February: 27.0 µg/m³, 1.6× usualAnsan-si, 13 February: 9.9 µg/m³, 0.6× usualAnsan-si, 14 February: 31.2 µg/m³, 1.8× usualAnsan-si, 15 February: 40.0 µg/m³, 2.3× usualAnsan-si, 16 February: 45.5 µg/m³, 2.6× usualAnsan-si, 17 February: 7.6 µg/m³, 0.4× usualAnsan-si, 18 February: 8.1 µg/m³, 0.5× usualAnsan-si, 19 February: 8.3 µg/m³, 0.5× usualGwangjuGwangju, 11 February: 25.1 µg/m³, 1.7× usualGwangju, 12 February: 17.3 µg/m³, 1.1× usualGwangju, 13 February: 9.5 µg/m³, 0.6× usualGwangju, 14 February: 19.2 µg/m³, 1.3× usualGwangju, 15 February: 36.4 µg/m³, 2.4× usualGwangju, 16 February: 44.7 µg/m³, 2.9× usualGwangju, 17 February: 16.3 µg/m³, 1.1× usualGwangju, 18 February: 11.0 µg/m³, 0.7× usualGwangju, 19 February: 10.0 µg/m³, 0.7× usualBuanBuan, 11 February: 26.2 µg/m³, 1.4× usualBuan, 12 February: 18.1 µg/m³, 0.9× usualBuan, 13 February: 8.3 µg/m³, 0.4× usualBuan, 14 February: 18.5 µg/m³, 1.0× usualBuan, 15 February: 39.5 µg/m³, 2.0× usualBuan, 16 February: 44.6 µg/m³, 2.3× usualBuan, 17 February: 9.4 µg/m³, 0.5× usualBuan, 18 February: 10.0 µg/m³, 0.5× usualBuan, 19 February: 8.7 µg/m³, 0.5× usualAsanAsan, 11 February: 31.9 µg/m³, 1.7× usualAsan, 12 February: 21.1 µg/m³, 1.1× usualAsan, 13 February: 10.3 µg/m³, 0.5× usualAsan, 14 February: 28.9 µg/m³, 1.5× usualAsan, 15 February: 38.0 µg/m³, 2.0× usualAsan, 16 February: 44.6 µg/m³, 2.3× usualAsan, 17 February: 9.8 µg/m³, 0.5× usualAsan, 18 February: 9.7 µg/m³, 0.5× usualAsan, 19 February: 10.6 µg/m³, 0.5× usualDamyangDamyang, 11 February: 23.3 µg/m³, 1.9× usualDamyang, 12 February: 17.0 µg/m³, 1.4× usualDamyang, 13 February: 6.3 µg/m³, 0.5× usualDamyang, 14 February: 15.0 µg/m³, 1.2× usualDamyang, 15 February: 34.3 µg/m³, 2.7× usualDamyang, 16 February: 44.5 µg/m³, 3.6× usualDamyang, 17 February: 13.0 µg/m³, 1.0× usualDamyang, 18 February: 7.1 µg/m³, 0.6× usualDamyang, 19 February: 6.1 µg/m³, 0.5× usualSantyokuSantyoku, 11 February: 25.8 µg/m³, 1.6× usualSantyoku, 12 February: 20.9 µg/m³, 1.3× usualSantyoku, 13 February: 10.1 µg/m³, 0.6× usualSantyoku, 14 February: 20.5 µg/m³, 1.3× usualSantyoku, 15 February: 34.3 µg/m³, 2.2× usualSantyoku, 16 February: 44.4 µg/m³, 2.8× usualSantyoku, 17 February: 18.2 µg/m³, 1.1× usualSantyoku, 18 February: 10.9 µg/m³, 0.7× usualSantyoku, 19 February: 11.6 µg/m³, 0.7× usualWanjuWanju, 11 February: 23.9 µg/m³, 1.5× usualWanju, 12 February: 16.3 µg/m³, 1.0× usualWanju, 13 February: 7.4 µg/m³, 0.5× usualWanju, 14 February: 19.8 µg/m³, 1.3× usualWanju, 15 February: 37.5 µg/m³, 2.4× usualWanju, 16 February: 43.0 µg/m³, 2.7× usualWanju, 17 February: 10.6 µg/m³, 0.7× usualWanju, 18 February: 8.6 µg/m³, 0.5× usualWanju, 19 February: 7.7 µg/m³, 0.5× usualAndongAndong, 11 February: 27.0 µg/m³, 1.6× usualAndong, 12 February: 27.6 µg/m³, 1.6× usualAndong, 13 February: 12.2 µg/m³, 0.7× usualAndong, 14 February: 22.7 µg/m³, 1.3× usualAndong, 15 February: 33.8 µg/m³, 2.0× usualAndong, 16 February: 43.0 µg/m³, 2.5× usualAndong, 17 February: 20.7 µg/m³, 1.2× usualAndong, 18 February: 13.7 µg/m³, 0.8× usualAndong, 19 February: 12.9 µg/m³, 0.8× usualHongseongHongseong, 11 February: 31.3 µg/m³, 1.7× usualHongseong, 12 February: 23.0 µg/m³, 1.2× usualHongseong, 13 February: 9.1 µg/m³, 0.5× usualHongseong, 14 February: 23.8 µg/m³, 1.3× usualHongseong, 15 February: 32.1 µg/m³, 1.7× usualHongseong, 16 February: 45.9 µg/m³, 2.4× usualHongseong, 17 February: 8.3 µg/m³, 0.4× usualHongseong, 18 February: 8.6 µg/m³, 0.5× usualHongseong, 19 February: 8.4 µg/m³, 0.4× usualYesanYesan, 11 February: 32.7 µg/m³, 1.7× usualYesan, 12 February: 24.5 µg/m³, 1.3× usualYesan, 13 February: 8.1 µg/m³, 0.4× usualYesan, 14 February: 24.0 µg/m³, 1.3× usualYesan, 15 February: 34.4 µg/m³, 1.8× usualYesan, 16 February: 45.7 µg/m³, 2.4× usualYesan, 17 February: 8.6 µg/m³, 0.5× usualYesan, 18 February: 8.5 µg/m³, 0.5× usualYesan, 19 February: 8.9 µg/m³, 0.5× usualTangjinTangjin, 11 February: 33.6 µg/m³, 1.9× usualTangjin, 12 February: 22.4 µg/m³, 1.3× usualTangjin, 13 February: 8.4 µg/m³, 0.5× usualTangjin, 14 February: 26.5 µg/m³, 1.5× usualTangjin, 15 February: 34.4 µg/m³, 2.0× usualTangjin, 16 February: 43.1 µg/m³, 2.4× usualTangjin, 17 February: 17.0 µg/m³, 1.0× usualTangjin, 18 February: 13.1 µg/m³, 0.7× usualTangjin, 19 February: 12.3 µg/m³, 0.7× usual11 Feb1213141516171819
The 60 cities with the highest readings of 132, 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
Icheon-siGyeonggi-do, South Korea2 65.716 February17.13.8×
YeojuGyeonggi-do, South Korea2 71.915 February18.93.8×
BuyeoChungcheongnam-do, South Korea2 50.916 February13.53.8×
JangheungJeollanam-do, South Korea1 34.416 February9.63.6×
DamyangJeollanam-do, South Korea2 44.516 February12.53.6×
NajuJeollanam-do, South Korea2 43.716 February12.33.6×
SinanJeollanam-do, South Korea1 38.816 February11.03.5×
YeonggwangJeollanam-do, South Korea1 40.216 February11.53.5×
Yangp'yŏngGyeonggi-do, South Korea2 67.616 February19.43.5×
KosongGangwon-do, South Korea2 33.816 February10.13.3×
GwangjuGyeonggi-do, South Korea2 56.816 February17.03.3×
JangseongJeollanam-do, South Korea2 40.316 February12.23.3×
SokchoGangwon-do, South Korea2 34.016 February10.43.3×
SeosanChungcheongnam-do, South Korea2 45.816 February14.23.2×
SuwonGyeonggi-do, South Korea2 54.816 February17.03.2×
AnseongGyeonggi-do, South Korea3 51.516 February16.03.2×
MuanJeollanam-do, South Korea1 37.616 February11.83.2×
OsanGyeonggi-do, South Korea3 53.616 February17.23.1×
Jeju CityJeju-do, South Korea1 35.716 February11.63.1×
YeosuJeollanam-do, South Korea2 36.315 February12.13.0×
GaigeturiJeju-do, South Korea1 33.916 February11.33.0×
PyeongtaekGyeonggi-do, South Korea2 50.916 February17.03.0×
YecheonGyeongsangbuk-do, South Korea2 40.916 February13.73.0×
HwadoGyeonggi-do, South Korea2 54.616 February18.43.0×
YeongamJeollanam-do, South Korea2 39.716 February13.43.0×
Hongch’ŏnGangwon-do, South Korea2 53.316 February18.03.0×
PubalGyeonggi-do, South Korea2 66.016 February22.33.0×
Koch'angJeollabuk-do, South Korea1 34.916 February11.83.0×
MasanGwangju, South Korea2 47.216 February16.03.0×
GwangjuGwangju, South Korea2 44.716 February15.22.9×
SejongSejong-si, South Korea2 49.416 February16.82.9×
Seongnam-siGyeonggi-do, South Korea2 47.416 February16.32.9×
NonsanChungcheongnam-do, South Korea2 46.716 February16.12.9×
ChuncheonGangwon-do, South Korea2 48.515 February16.82.9×
GongjuChungcheongnam-do, South Korea2 41.816 February14.52.9×
SeogwipoJeju-do, South Korea1 30.116 February10.52.9×
HwawŏnDaegu, South Korea2 34.915 February12.22.9×
CheonanChungcheongnam-do, South Korea2 47.916 February16.82.9×
ImsilJeollabuk-do, South Korea2 41.116 February14.52.8×
Cheongsong gunGyeongsangbuk-do, South Korea2 37.416 February13.22.8×
Anyang-siGyeonggi-do, South Korea3 47.016 February16.62.8×
MunsanGyeonggi-do, South Korea2 51.715 February18.32.8×
WŏnjuGangwon-do, South Korea2 63.216 February22.42.8×
EisenGyeongsangbuk-do, South Korea2 31.915 February11.42.8×
Jinan-gunJeollabuk-do, South Korea2 39.716 February14.22.8×
SantyokuGangwon-do, South Korea2 44.416 February15.92.8×
Hwaseong-siGyeonggi-do, South Korea2 44.416 February16.02.8×
MungyeongGyeongsangbuk-do, South Korea2 41.216 February15.02.7×
Chinch'ŏnNorth Chungcheong, South Korea2 50.516 February18.42.7×
WanjuJeollabuk-do, South Korea2 43.016 February15.72.7×
HaenamJeollanam-do, South Korea1 34.216 February12.52.7×
DaeguDaegu, South Korea2 37.315 February13.72.7×
YangguGangwon-do, South Korea2 45.716 February16.82.7×
CheorwonGangwon-do, South Korea2 53.116 February19.72.7×
KimhaeGyeongsangnam-do, South Korea2 34.515 February12.82.7×
NeietsuGangwon-do, South Korea2 42.816 February15.92.7×
SeoulSeoul, South Korea3 49.716 February18.52.7×
GangneungGangwon-do, South Korea2 37.616 February14.02.7×
YŏnmuChungcheongnam-do, South Korea2 41.616 February15.52.7×
GapyeongGyeonggi-do, South Korea2 47.516 February17.72.7×
IksanJeollabuk-do, South Korea2 46.416 February17.32.7×
Bucheon-siGyeonggi-do, South Korea2 46.116 February17.22.7×
MokpoJeollanam-do, South Korea1 41.516 February15.52.7×
ChungjuNorth Chungcheong, South Korea2 49.816 February18.72.7×
Cheongju-siNorth Chungcheong, South Korea2 49.216 February18.52.7×
KwangyangJeollanam-do, South Korea2 31.615 February11.92.7×
ChangwonGyeongsangnam-do, South Korea2 30.515 February11.62.6×
Ansan-siGyeonggi-do, South Korea2 45.516 February17.42.6×
JungpyongNorth Chungcheong, South Korea2 48.916 February18.82.6×
ChinjuGyeongsangnam-do, South Korea2 35.816 February13.82.6×
HwacheonGangwon-do, South Korea2 41.416 February16.02.6×
Guri-siGyeonggi-do, South Korea2 48.616 February18.82.6×
KunwiGyeongsangbuk-do, South Korea2 32.816 February12.72.6×
UngsangGyeongsangnam-do, South Korea2 28.315 February11.02.6×
SeonghwanChungcheongnam-do, South Korea2 55.715 February21.72.6×
YangjuGyeonggi-do, South Korea3 43.016 February16.82.6×
DaejeonDaejeon, South Korea2 41.716 February16.32.6×
YangsanGyeongsangnam-do, South Korea2 30.115 February11.82.6×
OkcheonNorth Chungcheong, South Korea2 48.216 February18.92.6×
GunsanJeollabuk-do, South Korea2 47.416 February18.62.5×
GwangmyeongGyeonggi-do, South Korea2 46.616 February18.32.5×
Uijeongbu-siGyeonggi-do, South Korea3 45.316 February17.82.5×
NaesŏGyeongsangnam-do, South Korea2 34.216 February13.52.5×
Goyang-siGyeonggi-do, South Korea2 41.816 February16.52.5×
SuncheonJeollanam-do, South Korea2 28.316 February11.22.5×
NamsaJeollabuk-do, South Korea2 41.616 February16.52.5×
YeongjuGyeongsangbuk-do, South Korea2 53.816 February21.42.5×
BoseongJeollanam-do, South Korea1 28.816 February11.52.5×
MiryangGyeongsangnam-do, South Korea2 34.015 February13.62.5×
AndongGyeongsangbuk-do, South Korea2 43.016 February17.22.5×
HayangGyeongsangbuk-do, South Korea2 36.216 February14.52.5×
ChangsuJeollabuk-do, South Korea1 38.116 February15.32.5×
NangenJeollabuk-do, South Korea2 36.116 February14.52.5×
KinzanChungcheongnam-do, South Korea2 49.016 February19.72.5×
ChangnyeongGyeongsangnam-do, South Korea2 30.315 February12.22.5×
SangjuGyeongsangbuk-do, South Korea2 45.916 February18.52.5×
TangjinChungcheongnam-do, South Korea1 43.116 February17.62.4×
YeongdongNorth Chungcheong, South Korea2 46.016 February18.82.4×
GyeongjuGyeongsangbuk-do, South Korea2 27.415 February11.22.4×
YesanChungcheongnam-do, South Korea1 45.716 February18.72.4×
HongseongChungcheongnam-do, South Korea1 45.916 February18.82.4×
Donghae CityGangwon-do, South Korea2 37.616 February15.52.4×
T’aebaekGangwon-do, South Korea1 29.116 February12.12.4×
WabuGyeonggi-do, South Korea2 40.515 February17.12.4×
NamyangjuGyeonggi-do, South Korea2 41.415 February17.52.4×
Gyeongsan-siGyeongsangbuk-do, South Korea2 37.415 February15.92.4×
TongyeongGyeongsangnam-do, South Korea2 34.416 February14.72.3×
YeonilGyeongsangbuk-do, South Korea2 34.615 February14.82.3×
BoryeongChungcheongnam-do, South Korea1 41.616 February17.82.3×
GoseongGyeongsangnam-do, South Korea2 30.215 February13.02.3×
KoesanNorth Chungcheong, South Korea2 47.616 February20.52.3×
BusanBusan, South Korea1 31.815 February13.72.3×
WaegwanGyeongsangbuk-do, South Korea2 38.516 February16.62.3×
GumiGyeongsangbuk-do, South Korea2 46.115 February19.92.3×
PohangGyeongsangbuk-do, South Korea1 38.615 February16.72.3×
BuanJeollabuk-do, South Korea2 44.616 February19.32.3×
AsanChungcheongnam-do, South Korea2 44.616 February19.32.3×
HanamGyeonggi-do, South Korea2 40.716 February17.72.3×
GwangyangJeollanam-do, South Korea2 28.516 February12.42.3×
Gimpo-siGyeonggi-do, South Korea2 44.816 February19.52.3×
GijangBusan, South Korea1 31.715 February13.82.3×
JeonjuJeollabuk-do, South Korea2 35.416 February15.62.3×
IncheonIncheon, South Korea2 42.116 February18.72.3×
KimjeJeollabuk-do, South Korea2 47.016 February20.92.2×
KuryeJeollanam-do, South Korea1 26.716 February12.02.2×
GeojeGyeongsangnam-do, South Korea1 28.615 February13.02.2×
JumunjinGangwon-do, South Korea1 25.416 February11.62.2×
GimcheonGyeongsangbuk-do, South Korea2 40.216 February18.42.2×
Taesal-liChungcheongnam-do, South Korea1 32.216 February14.82.2×
Ganghwa-gunIncheon, South Korea1 42.316 February19.52.2×
UlsanUlsan, South Korea2 26.815 February13.02.1×
JeongeupJeollabuk-do, South Korea1 33.616 February16.82.0×

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 7 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, February 2025: 132 cities with PM2.5 at twice their usual or more, 14 to 16 February 2025, smogrank.com/episodes/2025-02-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.