SmogRank / Episodes / South Korea

South Korea, March 2026

For 4 days, from 9 to 12 March 2026, 88 cities in South Korea had PM2.5 at least twice their usual for the time of year. The worst reading was Gumi, Gyeongsangbuk-do, South Korea: 58.5 µg/m³ on 10 March, about 2.3× its usual 25.1.

No cause namedWe have no fire or smoke records for these days, so we only say what the measurements show.
Cities reached88in 1 country
Days49 to 12 March 2026
Worst day10 March66 cities counted
Furthest above usual3.0×Yeosu

Day by day

10 March 66 cities at twice their usual or more
ChangnyeongYŏnmuIksanGongjuBuyeoBeolgyoGunsanHwasunCheonanAsanSeonghwanYesanBoseongCheongsong gunPyeongtaekHongseongYeojuPubalUlsanWŏnjuMuanTangjinSuwonSeosanHwaseong-siT’aebaekMokpoAnsan-siAnyang-siHanamGwangmyeongSeoulBucheon-siIncheonSinanChuncheonUijeongbu-siGoyang-siSantyokuGimpo-siDonghae CityGangneungTsushimaYangguMunsanGanghwa-gunCheorwonKosongIkiSeogwipoMatsuuraKaratsuSaseboImarichō-kōItoshimaMaebaru-chūōKogaMunakataFukuokaTakuTakeoKogaUreshinomachi-shimojukuWakasugiKasugaHigashigōNakamaKashimaNōgataKanzakimachi-kanzakiSagaIizukaKitakyushuShimonosekiTosuOgōriNagatoTagawaYanagawaChikugoKandaMineTanushimarumachi-toyokiYukuhashiOnodaUkihaYameHagiUbeBuzenYamaguchiHitaNakatsuHōfuMasudaHamadaShūnanYufuKudamatsuHijiBeppuGōtsuchōKunisakiHikariŌitaTsurusakiYanaiŌtakeIwakuniŌdachō-ōdaHiroshimaYaeGionTsukumiuraIzumoKureHigashihiroshimaMiyoshiYawatahamaIyoMatsuyamaUwajimaJeongeupGaigeturiGwangjuYeonggwangPohangAndongCheongju-siOsanYangp'yŏngSeongnam-siJangseongJeju CityHaenamMasanNajuBuanWabuNaesŏUngsangChinch'ŏnJungpyongGijangKimhaeKinzanGuri-siGyeongjuNamsaNonsanDaejeonYangsanYeongdongNeietsuKimjeBoryeongWanjuSejongAnseongChangwonIcheon-siGapyeongGimcheonGwangjuKwangyangYangjuYecheonYeonilYeongamJangheungTaesal-liDamyangNamyangjuHongch’ŏnHwacheonKoesanGoseongGumiKuryeBusanSangjuYeongjuJumunjinKunwiMiryangOkcheonSokchoJeonjuImsilKoch'angChinjuChungjuTongyeongHwadoJinan-gunGeojeHwawŏnGwangyangSinhyeonMungyeongNangenChangsuHayangGyeongsan-siSuncheonDaeguWaegwanHadongEisenYeosu
6 Mar789101112131415
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

HwadoHwado, 6 March: 30.7 µg/m³, 1.6× usualHwado, 7 March: 20.6 µg/m³, 1.1× usualHwado, 8 March: 22.1 µg/m³, 1.2× usualHwado, 9 March: 40.8 µg/m³, 2.2× usualHwado, 10 March: 46.6 µg/m³, 2.5× usualHwado, 11 March: 31.3 µg/m³, 1.7× usualHwado, 12 March: 30.9 µg/m³, 1.6× usualHwado, 13 March: 15.0 µg/m³, 0.8× usualHwado, 14 March: 19.7 µg/m³, 1.0× usualHwado, 15 March: 37.5 µg/m³, 2.0× usualJinan-gunJinan-gun, 6 March: 19.5 µg/m³, 1.1× usualJinan-gun, 7 March: 18.5 µg/m³, 1.0× usualJinan-gun, 8 March: 16.4 µg/m³, 0.9× usualJinan-gun, 9 March: 41.1 µg/m³, 2.3× usualJinan-gun, 10 March: 45.0 µg/m³, 2.5× usualJinan-gun, 11 March: 31.1 µg/m³, 1.7× usualJinan-gun, 12 March: 33.6 µg/m³, 1.9× usualJinan-gun, 13 March: 12.4 µg/m³, 0.7× usualJinan-gun, 14 March: 18.3 µg/m³, 1.0× usualJinan-gun, 15 March: 43.3 µg/m³, 2.4× usualNangenNangen, 6 March: 17.3 µg/m³, 1.0× usualNangen, 7 March: 17.7 µg/m³, 1.0× usualNangen, 8 March: 15.2 µg/m³, 0.9× usualNangen, 9 March: 40.2 µg/m³, 2.4× usualNangen, 10 March: 43.7 µg/m³, 2.6× usualNangen, 11 March: 32.8 µg/m³, 1.9× usualNangen, 12 March: 35.9 µg/m³, 2.1× usualNangen, 13 March: 11.2 µg/m³, 0.7× usualNangen, 14 March: 18.5 µg/m³, 1.1× usualNangen, 15 March: 42.4 µg/m³, 2.5× usualSeongnam-siSeongnam-si, 6 March: 29.2 µg/m³, 1.4× usualSeongnam-si, 7 March: 16.3 µg/m³, 0.8× usualSeongnam-si, 8 March: 19.3 µg/m³, 1.0× usualSeongnam-si, 9 March: 41.4 µg/m³, 2.0× usualSeongnam-si, 10 March: 38.5 µg/m³, 1.9× usualSeongnam-si, 11 March: 29.8 µg/m³, 1.5× usualSeongnam-si, 12 March: 34.3 µg/m³, 1.7× usualSeongnam-si, 13 March: 12.5 µg/m³, 0.6× usualSeongnam-si, 14 March: 15.1 µg/m³, 0.7× usualSeongnam-si, 15 March: 36.3 µg/m³, 1.8× usualGumiGumi, 6 March: 20.5 µg/m³, 0.8× usualGumi, 7 March: 21.9 µg/m³, 0.9× usualGumi, 8 March: 17.4 µg/m³, 0.7× usualGumi, 9 March: 36.0 µg/m³, 1.4× usualGumi, 10 March: 58.5 µg/m³, 2.3× usualGumi, 11 March: 40.0 µg/m³, 1.6× usualGumi, 12 March: 29.5 µg/m³, 1.2× usualGumi, 13 March: 12.8 µg/m³, 0.5× usualGumi, 14 March: 15.5 µg/m³, 0.6× usualGumi, 15 March: 34.5 µg/m³, 1.4× usualWaegwanWaegwan, 6 March: 20.8 µg/m³, 1.1× usualWaegwan, 7 March: 22.0 µg/m³, 1.1× usualWaegwan, 8 March: 16.5 µg/m³, 0.8× usualWaegwan, 9 March: 34.9 µg/m³, 1.8× usualWaegwan, 10 March: 53.9 µg/m³, 2.7× usualWaegwan, 11 March: 34.0 µg/m³, 1.7× usualWaegwan, 12 March: 26.5 µg/m³, 1.4× usualWaegwan, 13 March: 9.9 µg/m³, 0.5× usualWaegwan, 14 March: 10.9 µg/m³, 0.6× usualWaegwan, 15 March: 31.8 µg/m³, 1.6× usualSangjuSangju, 6 March: 24.9 µg/m³, 1.1× usualSangju, 7 March: 23.3 µg/m³, 1.0× usualSangju, 8 March: 20.8 µg/m³, 0.9× usualSangju, 9 March: 39.1 µg/m³, 1.7× usualSangju, 10 March: 53.8 µg/m³, 2.3× usualSangju, 11 March: 41.2 µg/m³, 1.8× usualSangju, 12 March: 34.9 µg/m³, 1.5× usualSangju, 13 March: 12.3 µg/m³, 0.5× usualSangju, 14 March: 17.5 µg/m³, 0.7× usualSangju, 15 March: 36.3 µg/m³, 1.6× usualKoesanKoesan, 6 March: 24.1 µg/m³, 1.0× usualKoesan, 7 March: 22.0 µg/m³, 0.9× usualKoesan, 8 March: 21.2 µg/m³, 0.9× usualKoesan, 9 March: 40.0 µg/m³, 1.7× usualKoesan, 10 March: 53.5 µg/m³, 2.3× usualKoesan, 11 March: 37.5 µg/m³, 1.6× usualKoesan, 12 March: 34.6 µg/m³, 1.5× usualKoesan, 13 March: 10.8 µg/m³, 0.5× usualKoesan, 14 March: 17.9 µg/m³, 0.8× usualKoesan, 15 March: 37.9 µg/m³, 1.6× usualOkcheonOkcheon, 6 March: 22.0 µg/m³, 1.0× usualOkcheon, 7 March: 17.6 µg/m³, 0.8× usualOkcheon, 8 March: 18.9 µg/m³, 0.9× usualOkcheon, 9 March: 38.8 µg/m³, 1.8× usualOkcheon, 10 March: 53.3 µg/m³, 2.4× usualOkcheon, 11 March: 37.5 µg/m³, 1.7× usualOkcheon, 12 March: 42.8 µg/m³, 2.0× usualOkcheon, 13 March: 10.3 µg/m³, 0.5× usualOkcheon, 14 March: 17.3 µg/m³, 0.8× usualOkcheon, 15 March: 39.7 µg/m³, 1.8× usualChungjuChungju, 6 March: 29.0 µg/m³, 1.4× usualChungju, 7 March: 22.0 µg/m³, 1.0× usualChungju, 8 March: 18.5 µg/m³, 0.9× usualChungju, 9 March: 35.6 µg/m³, 1.7× usualChungju, 10 March: 51.5 µg/m³, 2.5× usualChungju, 11 March: 37.4 µg/m³, 1.8× usualChungju, 12 March: 35.0 µg/m³, 1.7× usualChungju, 13 March: 11.8 µg/m³, 0.6× usualChungju, 14 March: 15.7 µg/m³, 0.7× usualChungju, 15 March: 32.3 µg/m³, 1.5× usualGyeongsan-siGyeongsan-si, 6 March: 18.0 µg/m³, 1.0× usualGyeongsan-si, 7 March: 21.7 µg/m³, 1.2× usualGyeongsan-si, 8 March: 14.8 µg/m³, 0.8× usualGyeongsan-si, 9 March: 33.4 µg/m³, 1.8× usualGyeongsan-si, 10 March: 51.4 µg/m³, 2.7× usualGyeongsan-si, 11 March: 40.2 µg/m³, 2.1× usualGyeongsan-si, 12 March: 32.1 µg/m³, 1.7× usualGyeongsan-si, 13 March: 13.1 µg/m³, 0.7× usualGyeongsan-si, 14 March: 17.5 µg/m³, 0.9× usualGyeongsan-si, 15 March: 32.8 µg/m³, 1.7× usualChangsuChangsu, 6 March: 14.5 µg/m³, 0.8× usualChangsu, 7 March: 14.9 µg/m³, 0.8× usualChangsu, 8 March: 11.7 µg/m³, 0.6× usualChangsu, 9 March: 36.0 µg/m³, 1.9× usualChangsu, 10 March: 50.7 µg/m³, 2.7× usualChangsu, 11 March: 27.9 µg/m³, 1.5× usualChangsu, 12 March: 33.4 µg/m³, 1.7× usualChangsu, 13 March: 11.0 µg/m³, 0.6× usualChangsu, 14 March: 17.0 µg/m³, 0.9× usualChangsu, 15 March: 39.7 µg/m³, 2.1× usualYeongjuYeongju, 6 March: 24.3 µg/m³, 1.1× usualYeongju, 7 March: 27.8 µg/m³, 1.3× usualYeongju, 8 March: 23.2 µg/m³, 1.1× usualYeongju, 9 March: 42.0 µg/m³, 1.9× usualYeongju, 10 March: 50.7 µg/m³, 2.3× usualYeongju, 11 March: 43.8 µg/m³, 2.0× usualYeongju, 12 March: 26.4 µg/m³, 1.2× usualYeongju, 13 March: 15.5 µg/m³, 0.7× usualYeongju, 14 March: 18.9 µg/m³, 0.9× usualYeongju, 15 March: 38.4 µg/m³, 1.8× usualMungyeongMungyeong, 6 March: 19.2 µg/m³, 1.0× usualMungyeong, 7 March: 16.6 µg/m³, 0.9× usualMungyeong, 8 March: 15.3 µg/m³, 0.8× usualMungyeong, 9 March: 32.6 µg/m³, 1.7× usualMungyeong, 10 March: 50.0 µg/m³, 2.6× usualMungyeong, 11 March: 34.3 µg/m³, 1.8× usualMungyeong, 12 March: 26.9 µg/m³, 1.4× usualMungyeong, 13 March: 8.9 µg/m³, 0.5× usualMungyeong, 14 March: 14.3 µg/m³, 0.8× usualMungyeong, 15 March: 27.8 µg/m³, 1.5× usualGimcheonGimcheon, 6 March: 19.0 µg/m³, 0.8× usualGimcheon, 7 March: 19.7 µg/m³, 0.9× usualGimcheon, 8 March: 15.5 µg/m³, 0.7× usualGimcheon, 9 March: 33.3 µg/m³, 1.5× usualGimcheon, 10 March: 49.5 µg/m³, 2.2× usualGimcheon, 11 March: 36.8 µg/m³, 1.6× usualGimcheon, 12 March: 30.9 µg/m³, 1.4× usualGimcheon, 13 March: 13.3 µg/m³, 0.6× usualGimcheon, 14 March: 16.2 µg/m³, 0.7× usualGimcheon, 15 March: 34.2 µg/m³, 1.5× usualKinzanKinzan, 6 March: 21.2 µg/m³, 0.9× usualKinzan, 7 March: 18.6 µg/m³, 0.8× usualKinzan, 8 March: 15.8 µg/m³, 0.7× usualKinzan, 9 March: 37.3 µg/m³, 1.6× usualKinzan, 10 March: 49.1 µg/m³, 2.1× usualKinzan, 11 March: 34.4 µg/m³, 1.5× usualKinzan, 12 March: 38.9 µg/m³, 1.7× usualKinzan, 13 March: 12.1 µg/m³, 0.5× usualKinzan, 14 March: 16.6 µg/m³, 0.7× usualKinzan, 15 March: 44.8 µg/m³, 1.9× usualDaeguDaegu, 6 March: 16.5 µg/m³, 0.9× usualDaegu, 7 March: 18.8 µg/m³, 1.0× usualDaegu, 8 March: 12.9 µg/m³, 0.7× usualDaegu, 9 March: 30.1 µg/m³, 1.7× usualDaegu, 10 March: 48.4 µg/m³, 2.7× usualDaegu, 11 March: 36.3 µg/m³, 2.0× usualDaegu, 12 March: 26.0 µg/m³, 1.4× usualDaegu, 13 March: 11.0 µg/m³, 0.6× usualDaegu, 14 March: 13.6 µg/m³, 0.8× usualDaegu, 15 March: 30.0 µg/m³, 1.7× usualHayangHayang, 6 March: 14.7 µg/m³, 0.8× usualHayang, 7 March: 19.3 µg/m³, 1.1× usualHayang, 8 March: 12.9 µg/m³, 0.7× usualHayang, 9 March: 26.3 µg/m³, 1.5× usualHayang, 10 March: 47.8 µg/m³, 2.7× usualHayang, 11 March: 41.8 µg/m³, 2.4× usualHayang, 12 March: 29.3 µg/m³, 1.7× usualHayang, 13 March: 11.1 µg/m³, 0.6× usualHayang, 14 March: 15.9 µg/m³, 0.9× usualHayang, 15 March: 29.6 µg/m³, 1.7× usualYeongdongYeongdong, 6 March: 18.8 µg/m³, 0.8× usualYeongdong, 7 March: 18.8 µg/m³, 0.8× usualYeongdong, 8 March: 16.9 µg/m³, 0.8× usualYeongdong, 9 March: 31.0 µg/m³, 1.4× usualYeongdong, 10 March: 47.6 µg/m³, 2.1× usualYeongdong, 11 March: 32.0 µg/m³, 1.4× usualYeongdong, 12 March: 33.6 µg/m³, 1.5× usualYeongdong, 13 March: 10.0 µg/m³, 0.5× usualYeongdong, 14 March: 14.3 µg/m³, 0.6× usualYeongdong, 15 March: 35.7 µg/m³, 1.6× usualChinjuChinju, 6 March: 12.4 µg/m³, 0.7× usualChinju, 7 March: 17.5 µg/m³, 1.0× usualChinju, 8 March: 13.1 µg/m³, 0.7× usualChinju, 9 March: 27.7 µg/m³, 1.5× usualChinju, 10 March: 46.8 µg/m³, 2.5× usualChinju, 11 March: 37.8 µg/m³, 2.1× usualChinju, 12 March: 28.4 µg/m³, 1.5× usualChinju, 13 March: 10.3 µg/m³, 0.6× usualChinju, 14 March: 12.5 µg/m³, 0.7× usualChinju, 15 March: 30.3 µg/m³, 1.6× usualHadongHadong, 6 March: 14.6 µg/m³, 0.9× usualHadong, 7 March: 20.0 µg/m³, 1.3× usualHadong, 8 March: 15.8 µg/m³, 1.0× usualHadong, 9 March: 30.1 µg/m³, 1.9× usualHadong, 10 March: 46.0 µg/m³, 2.9× usualHadong, 11 March: 33.8 µg/m³, 2.1× usualHadong, 12 March: 28.1 µg/m³, 1.8× usualHadong, 13 March: 11.2 µg/m³, 0.7× usualHadong, 14 March: 13.8 µg/m³, 0.9× usualHadong, 15 March: 34.1 µg/m³, 2.1× usualIcheon-siIcheon-si, 6 March: 28.0 µg/m³, 1.4× usualIcheon-si, 7 March: 17.6 µg/m³, 0.9× usualIcheon-si, 8 March: 18.8 µg/m³, 0.9× usualIcheon-si, 9 March: 35.8 µg/m³, 1.8× usualIcheon-si, 10 March: 45.1 µg/m³, 2.2× usualIcheon-si, 11 March: 34.2 µg/m³, 1.7× usualIcheon-si, 12 March: 30.8 µg/m³, 1.5× usualIcheon-si, 13 March: 10.6 µg/m³, 0.5× usualIcheon-si, 14 March: 17.3 µg/m³, 0.8× usualIcheon-si, 15 March: 32.8 µg/m³, 1.6× usualCheongju-siCheongju-si, 6 March: 25.7 µg/m³, 1.2× usualCheongju-si, 7 March: 18.0 µg/m³, 0.8× usualCheongju-si, 8 March: 19.7 µg/m³, 0.9× usualCheongju-si, 9 March: 34.4 µg/m³, 1.5× usualCheongju-si, 10 March: 45.0 µg/m³, 2.0× usualCheongju-si, 11 March: 36.1 µg/m³, 1.6× usualCheongju-si, 12 March: 37.1 µg/m³, 1.7× usualCheongju-si, 13 March: 11.4 µg/m³, 0.5× usualCheongju-si, 14 March: 15.7 µg/m³, 0.7× usualCheongju-si, 15 March: 32.4 µg/m³, 1.5× usualJungpyongJungpyong, 6 March: 24.0 µg/m³, 1.1× usualJungpyong, 7 March: 18.1 µg/m³, 0.8× usualJungpyong, 8 March: 20.3 µg/m³, 0.9× usualJungpyong, 9 March: 35.0 µg/m³, 1.6× usualJungpyong, 10 March: 44.9 µg/m³, 2.1× usualJungpyong, 11 March: 34.6 µg/m³, 1.6× usualJungpyong, 12 March: 35.6 µg/m³, 1.6× usualJungpyong, 13 March: 9.7 µg/m³, 0.4× usualJungpyong, 14 March: 14.5 µg/m³, 0.7× usualJungpyong, 15 March: 33.7 µg/m³, 1.5× usualSejongSejong, 6 March: 21.0 µg/m³, 1.0× usualSejong, 7 March: 14.9 µg/m³, 0.7× usualSejong, 8 March: 19.5 µg/m³, 0.9× usualSejong, 9 March: 38.7 µg/m³, 1.9× usualSejong, 10 March: 44.8 µg/m³, 2.2× usualSejong, 11 March: 39.8 µg/m³, 1.9× usualSejong, 12 March: 38.1 µg/m³, 1.8× usualSejong, 13 March: 11.9 µg/m³, 0.6× usualSejong, 14 March: 13.9 µg/m³, 0.7× usualSejong, 15 March: 36.1 µg/m³, 1.7× usualYeosuYeosu, 6 March: 12.5 µg/m³, 0.8× usualYeosu, 7 March: 14.6 µg/m³, 1.0× usualYeosu, 8 March: 11.9 µg/m³, 0.8× usualYeosu, 9 March: 24.7 µg/m³, 1.7× usualYeosu, 10 March: 44.5 µg/m³, 3.0× usualYeosu, 11 March: 24.2 µg/m³, 1.6× usualYeosu, 12 March: 23.8 µg/m³, 1.6× usualYeosu, 13 March: 9.8 µg/m³, 0.7× usualYeosu, 14 March: 10.8 µg/m³, 0.7× usualYeosu, 15 March: 27.9 µg/m³, 1.9× usualTongyeongTongyeong, 6 March: 14.3 µg/m³, 0.8× usualTongyeong, 7 March: 19.9 µg/m³, 1.1× usualTongyeong, 8 March: 13.1 µg/m³, 0.7× usualTongyeong, 9 March: 30.0 µg/m³, 1.7× usualTongyeong, 10 March: 44.5 µg/m³, 2.5× usualTongyeong, 11 March: 27.5 µg/m³, 1.5× usualTongyeong, 12 March: 25.3 µg/m³, 1.4× usualTongyeong, 13 March: 11.9 µg/m³, 0.7× usualTongyeong, 14 March: 11.9 µg/m³, 0.7× usualTongyeong, 15 March: 23.9 µg/m³, 1.3× usualYangp'yŏngYangp'yŏng, 6 March: 25.7 µg/m³, 1.2× usualYangp'yŏng, 7 March: 20.0 µg/m³, 0.9× usualYangp'yŏng, 8 March: 19.2 µg/m³, 0.9× usualYangp'yŏng, 9 March: 35.8 µg/m³, 1.7× usualYangp'yŏng, 10 March: 43.9 µg/m³, 2.0× usualYangp'yŏng, 11 March: 29.0 µg/m³, 1.3× usualYangp'yŏng, 12 March: 24.8 µg/m³, 1.2× usualYangp'yŏng, 13 March: 9.5 µg/m³, 0.4× usualYangp'yŏng, 14 March: 16.0 µg/m³, 0.7× usualYangp'yŏng, 15 March: 32.3 µg/m³, 1.5× usualNamyangjuNamyangju, 6 March: 27.0 µg/m³, 1.4× usualNamyangju, 7 March: 19.3 µg/m³, 1.0× usualNamyangju, 8 March: 19.3 µg/m³, 1.0× usualNamyangju, 9 March: 36.1 µg/m³, 1.9× usualNamyangju, 10 March: 43.8 µg/m³, 2.3× usualNamyangju, 11 March: 28.8 µg/m³, 1.5× usualNamyangju, 12 March: 32.5 µg/m³, 1.7× usualNamyangju, 13 March: 11.9 µg/m³, 0.6× usualNamyangju, 14 March: 16.9 µg/m³, 0.9× usualNamyangju, 15 March: 33.9 µg/m³, 1.8× usualHwawŏnHwawŏn, 6 March: 16.1 µg/m³, 1.0× usualHwawŏn, 7 March: 17.0 µg/m³, 1.0× usualHwawŏn, 8 March: 11.8 µg/m³, 0.7× usualHwawŏn, 9 March: 27.7 µg/m³, 1.7× usualHwawŏn, 10 March: 43.7 µg/m³, 2.6× usualHwawŏn, 11 March: 34.0 µg/m³, 2.0× usualHwawŏn, 12 March: 26.1 µg/m³, 1.6× usualHwawŏn, 13 March: 9.8 µg/m³, 0.6× usualHwawŏn, 14 March: 13.2 µg/m³, 0.8× usualHwawŏn, 15 March: 27.0 µg/m³, 1.6× usualGwangjuGwangju, 6 March: 28.2 µg/m³, 1.4× usualGwangju, 7 March: 19.3 µg/m³, 1.0× usualGwangju, 8 March: 20.8 µg/m³, 1.1× usualGwangju, 9 March: 37.4 µg/m³, 1.9× usualGwangju, 10 March: 43.7 µg/m³, 2.2× usualGwangju, 11 March: 33.2 µg/m³, 1.7× usualGwangju, 12 March: 20.8 µg/m³, 1.1× usualGwangju, 13 March: 12.2 µg/m³, 0.6× usualGwangju, 14 March: 15.9 µg/m³, 0.8× usualGwangju, 15 March: 34.5 µg/m³, 1.7× usualChinch'ŏnChinch'ŏn, 6 March: 25.4 µg/m³, 1.2× usualChinch'ŏn, 7 March: 19.8 µg/m³, 0.9× usualChinch'ŏn, 8 March: 19.1 µg/m³, 0.9× usualChinch'ŏn, 9 March: 36.8 µg/m³, 1.8× usualChinch'ŏn, 10 March: 43.7 µg/m³, 2.1× usualChinch'ŏn, 11 March: 35.1 µg/m³, 1.7× usualChinch'ŏn, 12 March: 36.8 µg/m³, 1.8× usualChinch'ŏn, 13 March: 11.0 µg/m³, 0.5× usualChinch'ŏn, 14 March: 16.2 µg/m³, 0.8× usualChinch'ŏn, 15 March: 34.8 µg/m³, 1.7× usualMiryangMiryang, 6 March: 16.0 µg/m³, 0.9× usualMiryang, 7 March: 20.6 µg/m³, 1.2× usualMiryang, 8 March: 11.9 µg/m³, 0.7× usualMiryang, 9 March: 28.0 µg/m³, 1.6× usualMiryang, 10 March: 43.5 µg/m³, 2.4× usualMiryang, 11 March: 31.6 µg/m³, 1.8× usualMiryang, 12 March: no readingMiryang, 13 March: 8.6 µg/m³, 0.5× usualMiryang, 14 March: 13.3 µg/m³, 0.7× usualMiryang, 15 March: 27.4 µg/m³, 1.5× usualEisenEisen, 6 March: 15.4 µg/m³, 1.0× usualEisen, 7 March: 19.5 µg/m³, 1.3× usualEisen, 8 March: 13.6 µg/m³, 0.9× usualEisen, 9 March: 29.3 µg/m³, 1.9× usualEisen, 10 March: 43.3 µg/m³, 2.9× usualEisen, 11 March: 35.7 µg/m³, 2.4× usualEisen, 12 March: 25.9 µg/m³, 1.7× usualEisen, 13 March: 10.7 µg/m³, 0.7× usualEisen, 14 March: 12.7 µg/m³, 0.8× usualEisen, 15 March: 29.8 µg/m³, 2.0× usualGuri-siGuri-si, 6 March: 29.6 µg/m³, 1.5× usualGuri-si, 7 March: 18.0 µg/m³, 0.9× usualGuri-si, 8 March: 20.8 µg/m³, 1.0× usualGuri-si, 9 March: 38.2 µg/m³, 1.9× usualGuri-si, 10 March: 42.9 µg/m³, 2.1× usualGuri-si, 11 March: 31.2 µg/m³, 1.5× usualGuri-si, 12 March: 33.2 µg/m³, 1.6× usualGuri-si, 13 March: 12.5 µg/m³, 0.6× usualGuri-si, 14 March: 16.5 µg/m³, 0.8× usualGuri-si, 15 March: 35.4 µg/m³, 1.8× usualNamsaNamsa, 6 March: 19.9 µg/m³, 1.0× usualNamsa, 7 March: 15.6 µg/m³, 0.8× usualNamsa, 8 March: 17.4 µg/m³, 0.8× usualNamsa, 9 March: 35.1 µg/m³, 1.7× usualNamsa, 10 March: 38.5 µg/m³, 1.9× usualNamsa, 11 March: 31.8 µg/m³, 1.6× usualNamsa, 12 March: 42.8 µg/m³, 2.1× usualNamsa, 13 March: 12.4 µg/m³, 0.6× usualNamsa, 14 March: 25.4 µg/m³, 1.2× usualNamsa, 15 March: 42.9 µg/m³, 2.1× usualHongch’ŏnHongch’ŏn, 6 March: 19.0 µg/m³, 1.0× usualHongch’ŏn, 7 March: 18.1 µg/m³, 1.0× usualHongch’ŏn, 8 March: 16.4 µg/m³, 0.9× usualHongch’ŏn, 9 March: 31.7 µg/m³, 1.7× usualHongch’ŏn, 10 March: 42.7 µg/m³, 2.3× usualHongch’ŏn, 11 March: 29.0 µg/m³, 1.6× usualHongch’ŏn, 12 March: 19.2 µg/m³, 1.0× usualHongch’ŏn, 13 March: 12.0 µg/m³, 0.6× usualHongch’ŏn, 14 March: 13.4 µg/m³, 0.7× usualHongch’ŏn, 15 March: 31.0 µg/m³, 1.7× usualAndongAndong, 6 March: 20.2 µg/m³, 1.0× usualAndong, 7 March: 23.1 µg/m³, 1.1× usualAndong, 8 March: 17.9 µg/m³, 0.9× usualAndong, 9 March: 33.6 µg/m³, 1.6× usualAndong, 10 March: 42.5 µg/m³, 2.0× usualAndong, 11 March: 35.4 µg/m³, 1.7× usualAndong, 12 March: 24.7 µg/m³, 1.2× usualAndong, 13 March: 12.6 µg/m³, 0.6× usualAndong, 14 March: 13.6 µg/m³, 0.7× usualAndong, 15 March: 26.3 µg/m³, 1.3× usualSinhyeonSinhyeon, 6 March: 15.9 µg/m³, 1.0× usualSinhyeon, 7 March: 25.5 µg/m³, 1.5× usualSinhyeon, 8 March: 14.7 µg/m³, 0.9× usualSinhyeon, 9 March: 30.0 µg/m³, 1.8× usualSinhyeon, 10 March: 42.4 µg/m³, 2.6× usualSinhyeon, 11 March: 31.2 µg/m³, 1.9× usualSinhyeon, 12 March: 24.4 µg/m³, 1.5× usualSinhyeon, 13 March: 15.7 µg/m³, 0.9× usualSinhyeon, 14 March: 16.6 µg/m³, 1.0× usualSinhyeon, 15 March: 25.0 µg/m³, 1.5× usualYeonilYeonil, 6 March: 16.3 µg/m³, 0.8× usualYeonil, 7 March: 22.4 µg/m³, 1.2× usualYeonil, 8 March: 15.1 µg/m³, 0.8× usualYeonil, 9 March: 27.6 µg/m³, 1.4× usualYeonil, 10 March: 39.2 µg/m³, 2.0× usualYeonil, 11 March: 42.2 µg/m³, 2.2× usualYeonil, 12 March: 29.0 µg/m³, 1.5× usualYeonil, 13 March: 12.0 µg/m³, 0.6× usualYeonil, 14 March: 14.2 µg/m³, 0.7× usualYeonil, 15 March: 28.8 µg/m³, 1.5× usualGeojeGeoje, 6 March: 11.0 µg/m³, 0.7× usualGeoje, 7 March: 23.0 µg/m³, 1.4× usualGeoje, 8 March: 12.0 µg/m³, 0.7× usualGeoje, 9 March: 26.0 µg/m³, 1.6× usualGeoje, 10 March: 41.5 µg/m³, 2.6× usualGeoje, 11 March: 29.5 µg/m³, 1.8× usualGeoje, 12 March: 20.8 µg/m³, 1.3× usualGeoje, 13 March: 16.0 µg/m³, 1.0× usualGeoje, 14 March: 12.0 µg/m³, 0.7× usualGeoje, 15 March: 21.4 µg/m³, 1.3× usualNonsanNonsan, 6 March: 16.8 µg/m³, 0.8× usualNonsan, 7 March: 13.7 µg/m³, 0.7× usualNonsan, 8 March: 17.3 µg/m³, 0.9× usualNonsan, 9 March: 32.8 µg/m³, 1.6× usualNonsan, 10 March: 41.4 µg/m³, 2.1× usualNonsan, 11 March: 25.4 µg/m³, 1.3× usualNonsan, 12 March: 35.6 µg/m³, 1.8× usualNonsan, 13 March: 13.1 µg/m³, 0.7× usualNonsan, 14 March: 18.1 µg/m³, 0.9× usualNonsan, 15 March: 38.6 µg/m³, 1.9× usualOsanOsan, 6 March: 28.4 µg/m³, 1.4× usualOsan, 7 March: 19.2 µg/m³, 0.9× usualOsan, 8 March: 20.2 µg/m³, 1.0× usualOsan, 9 March: 40.9 µg/m³, 2.0× usualOsan, 10 March: 41.4 µg/m³, 2.0× usualOsan, 11 March: 35.1 µg/m³, 1.7× usualOsan, 12 March: 39.2 µg/m³, 1.9× usualOsan, 13 March: 14.2 µg/m³, 0.7× usualOsan, 14 March: 16.8 µg/m³, 0.8× usualOsan, 15 March: 38.4 µg/m³, 1.9× usualGapyeongGapyeong, 6 March: 29.3 µg/m³, 1.6× usualGapyeong, 7 March: 22.8 µg/m³, 1.2× usualGapyeong, 8 March: 19.5 µg/m³, 1.0× usualGapyeong, 9 March: 36.7 µg/m³, 2.0× usualGapyeong, 10 March: 41.2 µg/m³, 2.2× usualGapyeong, 11 March: 25.9 µg/m³, 1.4× usualGapyeong, 12 March: 25.5 µg/m³, 1.4× usualGapyeong, 13 March: 11.5 µg/m³, 0.6× usualGapyeong, 14 March: 16.8 µg/m³, 0.9× usualGapyeong, 15 March: 37.4 µg/m³, 2.0× usualAnseongAnseong, 6 March: 25.3 µg/m³, 1.3× usualAnseong, 7 March: 17.2 µg/m³, 0.9× usualAnseong, 8 March: 18.3 µg/m³, 1.0× usualAnseong, 9 March: 39.9 µg/m³, 2.1× usualAnseong, 10 March: 41.2 µg/m³, 2.2× usualAnseong, 11 March: 38.6 µg/m³, 2.1× usualAnseong, 12 March: 36.9 µg/m³, 2.0× usualAnseong, 13 March: 13.1 µg/m³, 0.7× usualAnseong, 14 March: 16.3 µg/m³, 0.9× usualAnseong, 15 March: 40.7 µg/m³, 2.2× usualYecheonYecheon, 6 March: 18.2 µg/m³, 1.0× usualYecheon, 7 March: 17.1 µg/m³, 0.9× usualYecheon, 8 March: 12.7 µg/m³, 0.7× usualYecheon, 9 March: 30.6 µg/m³, 1.7× usualYecheon, 10 March: 41.0 µg/m³, 2.2× usualYecheon, 11 March: 32.5 µg/m³, 1.8× usualYecheon, 12 March: 22.5 µg/m³, 1.2× usualYecheon, 13 March: 8.0 µg/m³, 0.4× usualYecheon, 14 March: 11.5 µg/m³, 0.6× usualYecheon, 15 March: 27.8 µg/m³, 1.5× usualBusanBusan, 6 March: 13.0 µg/m³, 0.7× usualBusan, 7 March: 21.0 µg/m³, 1.2× usualBusan, 8 March: 12.4 µg/m³, 0.7× usualBusan, 9 March: 24.2 µg/m³, 1.4× usualBusan, 10 March: 40.7 µg/m³, 2.3× usualBusan, 11 March: 30.0 µg/m³, 1.7× usualBusan, 12 March: 19.1 µg/m³, 1.1× usualBusan, 13 March: 11.1 µg/m³, 0.6× usualBusan, 14 March: 10.8 µg/m³, 0.6× usualBusan, 15 March: 22.1 µg/m³, 1.2× usualSuncheonSuncheon, 6 March: 10.5 µg/m³, 0.7× usualSuncheon, 7 March: 13.7 µg/m³, 0.9× usualSuncheon, 8 March: 9.7 µg/m³, 0.6× usualSuncheon, 9 March: 26.9 µg/m³, 1.8× usualSuncheon, 10 March: 40.3 µg/m³, 2.7× usualSuncheon, 11 March: 24.7 µg/m³, 1.6× usualSuncheon, 12 March: 31.4 µg/m³, 2.1× usualSuncheon, 13 March: 10.9 µg/m³, 0.7× usualSuncheon, 14 March: 12.1 µg/m³, 0.8× usualSuncheon, 15 March: 29.8 µg/m³, 2.0× usualYangjuYangju, 6 March: 27.6 µg/m³, 1.5× usualYangju, 7 March: 16.7 µg/m³, 0.9× usualYangju, 8 March: 17.7 µg/m³, 1.0× usualYangju, 9 March: 37.3 µg/m³, 2.1× usualYangju, 10 March: 40.3 µg/m³, 2.2× usualYangju, 11 March: 30.2 µg/m³, 1.7× usualYangju, 12 March: 29.5 µg/m³, 1.6× usualYangju, 13 March: 12.1 µg/m³, 0.7× usualYangju, 14 March: 17.2 µg/m³, 1.0× usualYangju, 15 March: 30.4 µg/m³, 1.7× usualPohangPohang, 6 March: 17.3 µg/m³, 0.9× usualPohang, 7 March: 23.8 µg/m³, 1.2× usualPohang, 8 March: 16.5 µg/m³, 0.8× usualPohang, 9 March: 26.6 µg/m³, 1.3× usualPohang, 10 March: 36.0 µg/m³, 1.8× usualPohang, 11 March: 40.5 µg/m³, 2.0× usualPohang, 12 March: 23.7 µg/m³, 1.2× usualPohang, 13 March: 14.0 µg/m³, 0.7× usualPohang, 14 March: 15.4 µg/m³, 0.8× usualPohang, 15 March: 27.9 µg/m³, 1.4× usualKimjeKimje, 6 March: 36.1 µg/m³, 1.5× usualKimje, 7 March: 18.5 µg/m³, 0.8× usualKimje, 8 March: 20.9 µg/m³, 0.9× usualKimje, 9 March: 38.2 µg/m³, 1.6× usualKimje, 10 March: 34.7 µg/m³, 1.4× usualKimje, 11 March: 36.1 µg/m³, 1.5× usualKimje, 12 March: 53.0 µg/m³, 2.2× usualKimje, 13 March: 28.8 µg/m³, 1.2× usualKimje, 14 March: 36.3 µg/m³, 1.5× usualKimje, 15 March: 43.6 µg/m³, 1.8× usualBuanBuan, 6 March: 21.0 µg/m³, 0.9× usualBuan, 7 March: 17.2 µg/m³, 0.7× usualBuan, 8 March: 21.9 µg/m³, 0.9× usualBuan, 9 March: 37.8 µg/m³, 1.5× usualBuan, 10 March: 28.5 µg/m³, 1.2× usualBuan, 11 March: 34.7 µg/m³, 1.4× usualBuan, 12 March: 51.5 µg/m³, 2.1× usualBuan, 13 March: 31.1 µg/m³, 1.3× usualBuan, 14 March: 37.0 µg/m³, 1.5× usualBuan, 15 March: 39.8 µg/m³, 1.6× usualBoryeongBoryeong, 6 March: 19.9 µg/m³, 0.9× usualBoryeong, 7 March: 16.0 µg/m³, 0.7× usualBoryeong, 8 March: 17.0 µg/m³, 0.7× usualBoryeong, 9 March: 36.8 µg/m³, 1.6× usualBoryeong, 10 March: 26.0 µg/m³, 1.1× usualBoryeong, 11 March: 28.7 µg/m³, 1.3× usualBoryeong, 12 March: 49.7 µg/m³, 2.2× usualBoryeong, 13 March: 26.4 µg/m³, 1.2× usualBoryeong, 14 March: 30.0 µg/m³, 1.3× usualBoryeong, 15 March: 34.3 µg/m³, 1.5× usualWanjuWanju, 6 March: 19.9 µg/m³, 0.9× usualWanju, 7 March: 14.7 µg/m³, 0.7× usualWanju, 8 March: 17.1 µg/m³, 0.8× usualWanju, 9 March: 35.5 µg/m³, 1.6× usualWanju, 10 March: 36.3 µg/m³, 1.6× usualWanju, 11 March: 31.7 µg/m³, 1.4× usualWanju, 12 March: 48.7 µg/m³, 2.2× usualWanju, 13 March: 27.1 µg/m³, 1.2× usualWanju, 14 March: 24.6 µg/m³, 1.1× usualWanju, 15 March: 45.7 µg/m³, 2.1× usualJeonjuJeonju, 6 March: 18.0 µg/m³, 0.9× usualJeonju, 7 March: 15.6 µg/m³, 0.8× usualJeonju, 8 March: 16.3 µg/m³, 0.9× usualJeonju, 9 March: 31.8 µg/m³, 1.7× usualJeonju, 10 March: 32.0 µg/m³, 1.7× usualJeonju, 11 March: 28.1 µg/m³, 1.5× usualJeonju, 12 March: 47.3 µg/m³, 2.5× usualJeonju, 13 March: 22.0 µg/m³, 1.2× usualJeonju, 14 March: 20.1 µg/m³, 1.1× usualJeonju, 15 March: 37.7 µg/m³, 2.0× usualJeongeupJeongeup, 6 March: 19.7 µg/m³, 0.9× usualJeongeup, 7 March: 16.8 µg/m³, 0.7× usualJeongeup, 8 March: 16.8 µg/m³, 0.7× usualJeongeup, 9 March: 34.3 µg/m³, 1.5× usualJeongeup, 10 March: 29.5 µg/m³, 1.3× usualJeongeup, 11 March: 28.7 µg/m³, 1.3× usualJeongeup, 12 March: 46.3 µg/m³, 2.0× usualJeongeup, 13 March: 31.8 µg/m³, 1.4× usualJeongeup, 14 March: 27.9 µg/m³, 1.2× usualJeongeup, 15 March: 35.7 µg/m³, 1.6× usualImsilImsil, 6 March: 16.5 µg/m³, 0.9× usualImsil, 7 March: 14.7 µg/m³, 0.8× usualImsil, 8 March: 14.0 µg/m³, 0.8× usualImsil, 9 March: 35.0 µg/m³, 1.9× usualImsil, 10 March: 34.2 µg/m³, 1.9× usualImsil, 11 March: 28.0 µg/m³, 1.5× usualImsil, 12 March: 45.2 µg/m³, 2.5× usualImsil, 13 March: 19.8 µg/m³, 1.1× usualImsil, 14 March: 16.5 µg/m³, 0.9× usualImsil, 15 March: 42.2 µg/m³, 2.3× usualKoch'angKoch'ang, 6 March: 15.7 µg/m³, 0.9× usualKoch'ang, 7 March: 11.1 µg/m³, 0.6× usualKoch'ang, 8 March: 12.0 µg/m³, 0.7× usualKoch'ang, 9 March: 29.4 µg/m³, 1.7× usualKoch'ang, 10 March: 22.0 µg/m³, 1.2× usualKoch'ang, 11 March: 22.4 µg/m³, 1.3× usualKoch'ang, 12 March: 44.5 µg/m³, 2.5× usualKoch'ang, 13 March: 26.2 µg/m³, 1.5× usualKoch'ang, 14 March: 22.7 µg/m³, 1.3× usualKoch'ang, 15 March: 30.1 µg/m³, 1.7× usualMasanMasan, 6 March: 18.4 µg/m³, 0.9× usualMasan, 7 March: 14.4 µg/m³, 0.7× usualMasan, 8 March: 12.5 µg/m³, 0.6× usualMasan, 9 March: 32.7 µg/m³, 1.6× usualMasan, 10 March: 28.3 µg/m³, 1.4× usualMasan, 11 March: 25.8 µg/m³, 1.3× usualMasan, 12 March: 43.4 µg/m³, 2.1× usualMasan, 13 March: 28.1 µg/m³, 1.4× usualMasan, 14 March: 24.8 µg/m³, 1.2× usualMasan, 15 March: 33.0 µg/m³, 1.6× usualGwangjuGwangju, 6 March: 17.2 µg/m³, 0.9× usualGwangju, 7 March: 15.2 µg/m³, 0.8× usualGwangju, 8 March: 13.5 µg/m³, 0.7× usualGwangju, 9 March: 29.9 µg/m³, 1.5× usualGwangju, 10 March: 29.0 µg/m³, 1.5× usualGwangju, 11 March: 26.2 µg/m³, 1.3× usualGwangju, 12 March: 40.6 µg/m³, 2.0× usualGwangju, 13 March: 21.6 µg/m³, 1.1× usualGwangju, 14 March: 20.8 µg/m³, 1.0× usualGwangju, 15 March: 32.1 µg/m³, 1.6× usual6 Mar789101112131415
The 60 cities with the highest readings of 88, 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
YeosuJeollanam-do, South Korea1 44.510 March14.93.0×
HadongGyeongsangnam-do, South Korea2 46.010 March16.02.9×
EisenGyeongsangbuk-do, South Korea2 43.310 March15.12.9×
WaegwanGyeongsangbuk-do, South Korea1 53.910 March19.62.7×
HayangGyeongsangbuk-do, South Korea2 47.810 March17.42.7×
Gyeongsan-siGyeongsangbuk-do, South Korea2 51.410 March18.82.7×
DaeguDaegu, South Korea2 48.410 March18.02.7×
ChangsuJeollabuk-do, South Korea1 50.710 March19.12.7×
SuncheonJeollanam-do, South Korea2 40.310 March15.22.7×
GwangyangJeollanam-do, South Korea1 37.610 March14.22.6×
MungyeongGyeongsangbuk-do, South Korea1 50.010 March18.92.6×
HwawŏnDaegu, South Korea2 43.710 March16.72.6×
NangenJeollabuk-do, South Korea3 43.710 March17.02.6×
GeojeGyeongsangnam-do, South Korea1 41.510 March16.22.6×
SinhyeonGyeongsangnam-do, South Korea1 42.410 March16.62.6×
ChinjuGyeongsangnam-do, South Korea2 46.810 March18.42.5×
Koch'angJeollabuk-do, South Korea1 44.512 March17.72.5×
JeonjuJeollabuk-do, South Korea1 47.312 March19.02.5×
Jinan-gunJeollabuk-do, South Korea2 45.010 March18.12.5×
ImsilJeollabuk-do, South Korea1 45.212 March18.22.5×
HwadoGyeonggi-do, South Korea2 46.610 March18.92.5×
TongyeongGyeongsangnam-do, South Korea1 44.510 March18.12.5×
ChungjuNorth Chungcheong, South Korea1 51.510 March21.02.5×
JumunjinGangwon-do, South Korea1 33.510 March13.72.4×
OkcheonNorth Chungcheong, South Korea1 53.310 March21.82.4×
KunwiGyeongsangbuk-do, South Korea1 39.810 March16.32.4×
MiryangGyeongsangnam-do, South Korea1 43.510 March17.92.4×
SokchoGangwon-do, South Korea1 33.210 March13.92.4×
KuryeJeollanam-do, South Korea2 32.610 March13.92.3×
JangheungJeollanam-do, South Korea1 34.712 March14.82.3×
GoseongGyeongsangnam-do, South Korea1 39.310 March16.82.3×
GumiGyeongsangbuk-do, South Korea1 58.510 March25.12.3×
YeongjuGyeongsangbuk-do, South Korea2 50.710 March21.92.3×
NamyangjuGyeonggi-do, South Korea1 43.810 March19.02.3×
SangjuGyeongsangbuk-do, South Korea1 53.810 March23.42.3×
KoesanNorth Chungcheong, South Korea1 53.510 March23.32.3×
BusanBusan, South Korea1 40.710 March17.82.3×
Hongch’ŏnGangwon-do, South Korea1 42.710 March18.72.3×
Taesal-liChungcheongnam-do, South Korea1 38.112 March16.72.3×
DamyangJeollanam-do, South Korea1 40.212 March17.72.3×
HwacheonGangwon-do, South Korea1 35.210 March15.52.3×
YeongamJeollanam-do, South Korea1 37.012 March16.32.3×
YecheonGyeongsangbuk-do, South Korea1 41.010 March18.32.2×
YangjuGyeonggi-do, South Korea1 40.310 March18.02.2×
ChangwonGyeongsangnam-do, South Korea1 36.010 March16.12.2×
KwangyangJeollanam-do, South Korea1 37.710 March16.92.2×
Icheon-siGyeonggi-do, South Korea1 45.110 March20.42.2×
GimcheonGyeongsangbuk-do, South Korea1 49.510 March22.42.2×
GwangjuGyeonggi-do, South Korea1 43.710 March19.82.2×
WanjuJeollabuk-do, South Korea1 48.712 March22.12.2×
YeonilGyeongsangbuk-do, South Korea2 42.211 March19.22.2×
GapyeongGyeonggi-do, South Korea1 41.210 March18.82.2×
AnseongGyeonggi-do, South Korea1 41.210 March18.82.2×
KimjeJeollabuk-do, South Korea1 53.012 March24.22.2×
BoryeongChungcheongnam-do, South Korea1 49.712 March22.72.2×
SejongSejong-si, South Korea1 44.810 March20.82.2×
NajuJeollanam-do, South Korea1 36.112 March16.82.1×
YeongdongNorth Chungcheong, South Korea1 47.610 March22.22.1×
GyeongjuGyeongsangbuk-do, South Korea1 34.710 March16.22.1×
YangsanGyeongsangnam-do, South Korea1 33.410 March15.62.1×
HaenamJeollanam-do, South Korea1 40.012 March18.72.1×
JangseongJeollanam-do, South Korea1 37.812 March17.72.1×
Guri-siGyeonggi-do, South Korea1 42.910 March20.22.1×
DaejeonDaejeon, South Korea1 39.510 March18.72.1×
MasanGwangju, South Korea1 43.412 March20.62.1×
KimhaeGyeongsangnam-do, South Korea1 36.610 March17.42.1×
KinzanChungcheongnam-do, South Korea1 49.110 March23.42.1×
BuanJeollabuk-do, South Korea1 51.512 March24.62.1×
NamsaJeollabuk-do, South Korea2 42.915 March20.52.1×
Jeju CityJeju-do, South Korea1 35.312 March16.92.1×
Chinch'ŏnNorth Chungcheong, South Korea1 43.710 March21.02.1×
NonsanChungcheongnam-do, South Korea1 41.410 March19.92.1×
NaesŏGyeongsangnam-do, South Korea1 34.910 March16.92.1×
NeietsuGangwon-do, South Korea1 36.710 March17.82.1×
WabuGyeonggi-do, South Korea1 35.011 March17.02.1×
UngsangGyeongsangnam-do, South Korea1 34.310 March16.72.1×
GijangBusan, South Korea1 34.910 March17.02.1×
JungpyongNorth Chungcheong, South Korea1 44.910 March21.92.1×
GaigeturiJeju-do, South Korea1 34.012 March16.62.0×
Yangp'yŏngGyeonggi-do, South Korea1 43.910 March21.52.0×
GwangjuGwangju, South Korea1 40.612 March19.92.0×
JeongeupJeollabuk-do, South Korea1 46.312 March22.72.0×
Seongnam-siGyeonggi-do, South Korea2 41.49 March20.32.0×
PohangGyeongsangbuk-do, South Korea1 40.511 March19.92.0×
AndongGyeongsangbuk-do, South Korea1 42.510 March20.92.0×
YeonggwangJeollanam-do, South Korea1 36.912 March18.22.0×
Cheongju-siNorth Chungcheong, South Korea1 45.010 March22.22.0×
OsanGyeonggi-do, South Korea1 41.410 March20.52.0×

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 15 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, March 2026: 88 cities with PM2.5 at twice their usual or more, 9 to 12 March 2026, smogrank.com/episodes/2026-03-south-korea (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.