SmogRank / Countries / Japan / October 2025
Most polluted cities in Japan, October 2025
530 cities in Japan ranked by their average PM2.5 over the 31 days. Worst: Honmachi at 12.0 µg/m³, #323 of 2,110 cities in the world. Cleanest: Nonoichi at 3.8. A city needs measurements on 70% of the days to be ranked.
- 1HonmachiKumamoto 12.0
- 2MinamataKumamoto 11.2
- 3ŌtsukiYamanashi 11.1
- 4KotōKumamoto 11.0
- 5NakatsuOita 10.9
- 6HitoyoshiKumamoto 10.8
- 7ŌmutaFukuoka 10.6
- 7AraoKumamoto 10.6
- 9Uekimachi-mōnoKumamoto 10.4
- 9TamanaKumamoto 10.4
- 9SekimachiGifu 10.4
- 9OnomichiHiroshima 10.4
- 9HyūgaMiyazaki 10.4
- 14MiyakonojōMiyazaki 10.3
- 14Hondomachi-hondoKumamoto 10.3
- 14HitaOita 10.3
- 17SendaiKagoshima 10.1
- 17ŌzuKumamoto 10.1
- 17KumamotoKumamoto 10.1
- 17GyōdaSaitama 10.1
- 21UtoKumamoto 10.0
- 21NobeokaMiyazaki 10.0
- 21BeppuOita 10.0
- 24MifuneKumamoto 9.9
- 25KushikinoKagoshima 9.8
- 25IkedachōTokushima 9.8
- 27Tanushimarumachi-toyokiFukuoka 9.7
- 27KanoyaKagoshima 9.7
- 27KagoshimaKagoshima 9.7
- 27KirishimaKagoshima 9.7
- 31MinamikyushuKagoshima 9.6
- 32Shin’ichiHiroshima 9.4
- 32ŌgakiGifu 9.4
- 32Ōyanomachi-noboritateKumamoto 9.4
- 32IzumiKagoshima 9.4
- 32KamisuIbaraki 9.4
- 32BizenOkayama 9.4
- 38KikuchiKumamoto 9.3
- 38AnanTokushima 9.3
- 38SaijōEhime 9.3
- 38TsuchiuraIbaraki 9.3
- 42NichinanMiyazaki 9.2
- 43KobayashiMiyazaki 9.1
- 43IshinomakiMiyagi 9.1
- 45SaikiOita 9.0
- 45NiihamaEhime 9.0
- 47NodaChiba 8.9
- 47HigashigōSaga 8.9
- 49MieOita 8.8
- 49Misato, SaitamaSaitama 8.8
- 49KogaFukuoka 8.8
- 52KōnosuSaitama 8.7
- 52IsahayaNagasaki 8.7
- 52OwariasahiAichi 8.7
- 52HigashihiroshimaHiroshima 8.7
- 56TatebayashiGunma 8.6
- 56SagaSaga 8.6
- 56Kaseda-shirakameKagoshima 8.6
- 56FukuyamaHiroshima 8.6
- 56AsakaSaitama 8.6
- 56ChikugoFukuoka 8.6
- 56MimaTokushima 8.6
- 63ŌtaGunma 8.5
- 63ŌmuraNagasaki 8.5
- 63ŌitaOita 8.5
- 63KureHiroshima 8.5
- 63Imarichō-kōSaga 8.5
- 63HanyūSaitama 8.5
- 63AgeoSaitama 8.5
- 63NiizaSaitama 8.5
- 63AmamiKagoshima 8.5
- 63UkihaFukuoka 8.5
- 63ShikokuchūōEhime 8.5
- 74OnodaYamaguchi 8.4
- 74OkazakiAichi 8.4
- 74Kanzakimachi-kanzakiSaga 8.4
- 74Kamojimachō-jōgejimaTokushima 8.4
- 74NakaIbaraki 8.4
- 79SōkaSaitama 8.3
- 79NahaOkinawa 8.3
- 79KazoSaitama 8.3
- 79KawaguchiSaitama 8.3
- 79KashimaSaga 8.3
- 79Kan’onjichōKagawa 8.3
- 79IgusaSaitama 8.3
- 79ChitoseHokkaido 8.3
- 79Higashi-MatsuyamaSaitama 8.3
- 79HashimaGifu 8.3
- 89YokotaTokyo 8.2
- 89Ureshinomachi-shimojukuSaga 8.2
- 89KurihamaKanagawa 8.2
- 89KurashikiOkayama 8.2
- 89ChiryūAichi 8.2
- 89KimitsuChiba 8.2
- 89NagaiYamagata 8.2
- 89MuroranHokkaido 8.2
- 89TōkaiAichi 8.2
- 98TokiGifu 8.1
- 98TogitsuNagasaki 8.1
- 98Shimo-tsumaIbaraki 8.1
- 98NagasakiNagasaki 8.1
- 98MinamirinkanKanagawa 8.1
- 98MenumaSaitama 8.1
- 98Maebaru-chūōFukuoka 8.1
- 98KumagayaSaitama 8.1
- 98KofuYamanashi 8.1
- 98MinawaKanagawa 8.1
- 98IyoEhime 8.1
- 98ImabariEhime 8.1
- 98SagaeYamagata 8.1
- 98ShintomiMiyazaki 8.1
- 112TakahashiOkayama 8.0
- 112SaseboNagasaki 8.0
- 112MiyazakiMiyazaki 8.0
- 112KukichūōSaitama 8.0
- 112KariyaAichi 8.0
- 112HandaAichi 8.0
- 112GifuGifu 8.0
- 112MatsuyamaEhime 8.0
- 112HirosakiAomori 8.0
- 112OgaAkita 8.0
- 112YawatahamaEhime 8.0
- 123YokosukaKanagawa 7.9
- 123YokkaichiMie 7.9
- 123TsurusakiOita 7.9
- 123TakeoSaga 7.9
- 123TaharaAichi 7.9
- 123SakadoSaitama 7.9
- 123FukuokaFukuoka 7.9
- 123SaitamaSaitama 7.9
- 123ShonaiYamagata 7.9
- 123OgōriFukuoka 7.9
- 123AyaseKanagawa 7.9
- 123KodairaTokyo 7.9
- 135TokyoTokyo 7.8
- 135TagawaFukuoka 7.8
- 135SakataYamagata 7.8
- 135OyamaTochigi 7.8
- 135ŌtakeHiroshima 7.8
- 135KoshigayaSaitama 7.8
- 135KitakyushuFukuoka 7.8
- 135IwakuniYamaguchi 7.8
- 135ShiroishiMiyagi 7.8
- 135FukushimaFukushima 7.8
- 135BandōIbaraki 7.8
- 135TakuSaga 7.8
- 135SaikaiNagasaki 7.8
- 148ShibukawaGunma 7.7
- 148Sakai-nakajimaGunma 7.7
- 148NishioAichi 7.7
- 148KandaFukuoka 7.7
- 148HiroshimaHiroshima 7.7
- 148HiratsukaKanagawa 7.7
- 148UwajimaEhime 7.7
- 148MoriokaIwate 7.7
- 148IrumaSaitama 7.7
- 148HigashikurumeTokyo 7.7
- 158YoriiSaitama 7.6
- 158UozuToyama 7.6
- 158TomiokaGunma 7.6
- 158TamanoOkayama 7.6
- 158TakeharaHiroshima 7.6
- 158SuzukaMie 7.6
- 158Kodamachō-kodamaminamiSaitama 7.6
- 158KisarazuChiba 7.6
- 158KasukabeSaitama 7.6
- 158KashiwaChiba 7.6
- 158IizukaFukuoka 7.6
- 158SakuraChiba 7.6
- 158MatsuuraNagasaki 7.6
- 158YachiyoChiba 7.6
- 158KamagayaChiba 7.6
- 158MizuhoGifu 7.6
- 158AsakuchiOkayama 7.6
- 175ZentsujichóKagawa 7.5
- 175TsuruokaYamagata 7.5
- 175ShimonosekiYamaguchi 7.5
- 175HachinoheAomori 7.5
- 175MiyakojimaOkinawa 7.5
- 180YokohamaKanagawa 7.4
- 180YawataKyoto 7.4
- 180UrayasuChiba 7.4
- 180TsuyamaOkayama 7.4
- 180MinatoWakayama 7.4
- 180NyūzenToyama 7.4
- 180NakamaFukuoka 7.4
- 180NagoyaAichi 7.4
- 180KiryūGunma 7.4
- 180HigashiosakaOsaka 7.4
- 180ChibaChiba 7.4
- 180YurihonjōAkita 7.4
- 180BuzenFukuoka 7.4
- 180AzaminoKanagawa 7.4
- 194AtsugiKanagawa 7.3
- 194TenriNara 7.3
- 194Narutochō-mitsuishiTokushima 7.3
- 194NagoOkinawa 7.3
- 194KasaokaOkayama 7.3
- 194ItoigawaNiigata 7.3
- 194HonjōSaitama 7.3
- 194YonezawaYamagata 7.3
- 194IchiharaChiba 7.3
- 194InzaiChiba 7.3
- 194HigashimatsushimaMiyagi 7.3
- 194KuwanaMie 7.3
- 194YameFukuoka 7.3
- 207ToyotaAichi 7.2
- 207TosuSaga 7.2
- 207SanoTochigi 7.2
- 207ObitaNagasaki 7.2
- 207HigashinozoeHyōgo 7.2
- 207MiharaHiroshima 7.2
- 207MarugameKagawa 7.2
- 207KawagoeSaitama 7.2
- 207IwadeWakayama 7.2
- 207HōryūjiNara 7.2
- 207AiharaKanagawa 7.2
- 207YachimataChiba 7.2
- 207AsoKumamoto 7.2
- 207NoboritoKanagawa 7.2
- 207MinamibōsōChiba 7.2
- 222TokorozawaSaitama 7.1
- 222SōjaOkayama 7.1
- 222NakamuraKochi 7.1
- 222KurayoshiTottori 7.1
- 222KameyamaMie 7.1
- 222KainanWakayama 7.1
- 222ChigasakiKanagawa 7.1
- 222HikariYamaguchi 7.1
- 222YoshiokaMiyagi 7.1
- 222YamagataYamagata 7.1
- 222TorideIbaraki 7.1
- 222Natori-shiMiyagi 7.1
- 222MobaraChiba 7.1
- 222MatsushimaMiyagi 7.1
- 222AomoriAomori 7.1
- 222ChikuseiIbaraki 7.1
- 222JōsōIbaraki 7.1
- 222HigashimurayamaTokyo 7.1
- 222WakasugiFukuoka 7.1
- 222MatsusakaMie 7.1
- 222FuchūTokyo 7.1
- 222GotōNagasaki 7.1
- 244TsuMie 7.0
- 244SaikūMie 7.0
- 244ŌmeTokyo 7.0
- 244KogaFukuoka 7.0
- 244KaratsuSaga 7.0
- 244Kashima-shiIbaraki 7.0
- 244HimimachiToyama 7.0
- 244HachiōjiTokyo 7.0
- 244ŌharaChiba 7.0
- 244NaritaChiba 7.0
- 244IwanumaMiyagi 7.0
- 244KaniGifu 7.0
- 244NarashinoChiba 7.0
- 244KaminomaAichi 7.0
- 258Tottori-shiTottori 6.9
- 258TokonameAichi 6.9
- 258NōgataFukuoka 6.9
- 258MatsudoChiba 6.9
- 258KochiKochi 6.9
- 258KashiwaraNara 6.9
- 258IshigakiOkinawa 6.9
- 258FujisawaKanagawa 6.9
- 258YotsukaidōChiba 6.9
- 258ShinjōYamagata 6.9
- 258KakudaMiyagi 6.9
- 258IchinosekiIwate 6.9
- 258NoshiroAkita 6.9
- 258ImizuToyama 6.9
- 258YamatoKanagawa 6.9
- 273YanaiYamaguchi 6.8
- 273KudamatsuYamaguchi 6.8
- 273Kashihara-shiNara 6.8
- 273KamakuraKanagawa 6.8
- 273Kakogawachō-honmachiHyōgo 6.8
- 273KakegawaShizuoka 6.8
- 273IwakiFukushima 6.8
- 273EbinaKanagawa 6.8
- 273AkishimaTokyo 6.8
- 273KasugaFukuoka 6.8
- 273JōetsuNiigata 6.8
- 273ItoshimaFukuoka 6.8
- 273ShūnanYamaguchi 6.8
- 286UtsunomiyaTochigi 6.7
- 286TakaokaToyama 6.7
- 286TakamatsuKagawa 6.7
- 286SusakiKochi 6.7
- 286ShibataNiigata 6.7
- 286MikuniFukui 6.7
- 286KaminokawaTochigi 6.7
- 286GionHiroshima 6.7
- 286SawaraChiba 6.7
- 286HokotaIbaraki 6.7
- 286InabeMie 6.7
- 286ŌsakiMiyagi 6.7
- 286MineYamaguchi 6.7
- 286SodegauraChiba 6.7
- 286YoshinogawaTokushima 6.7
- 301YanagawaFukuoka 6.6
- 301TateyamaChiba 6.6
- 301SetoAichi 6.6
- 301OnoHyōgo 6.6
- 301OdawaraKanagawa 6.6
- 301Fukui-shiFukui 6.6
- 301FujiShizuoka 6.6
- 301AshikagaTochigi 6.6
- 301AmagasakiHyōgo 6.6
- 301OkinawaOkinawa 6.6
- 301MiuraKanagawa 6.6
- 301AkitaAkita 6.6
- 301AjikiChiba 6.6
- 301InashikiIbaraki 6.6
- 301SōmaFukushima 6.6
- 301KosaiShizuoka 6.6
- 301HiragiKagawa 6.6
- 301AmaAichi 6.6
- 319UbeYamaguchi 6.5
- 319TajimiGifu 6.5
- 319KishiwadaOsaka 6.5
- 319ChichibuSaitama 6.5
- 319KariyaHyōgo 6.5
- 319Tagajō-shiMiyagi 6.5
- 319KōriyamaFukushima 6.5
- 319HanamakiIwate 6.5
- 319TatsunoHyōgo 6.5
- 328YukuhashiFukuoka 6.4
- 328TokushimaTokushima 6.4
- 328SuzakaNagano 6.4
- 328ShimodaShizuoka 6.4
- 328SandachōHyōgo 6.4
- 328HadanoKanagawa 6.4
- 328FukuroiShizuoka 6.4
- 328AkiKochi 6.4
- 328AioiHyōgo 6.4
- 328YokoshibaChiba 6.4
- 328ŌdateAkita 6.4
- 328TakashimaShiga 6.4
- 328Minami-SōmaFukushima 6.4
- 328SugaiKyoto 6.4
- 328NankokuKochi 6.4
- 343YaeHiroshima 6.3
- 343TobaMie 6.3
- 343TakinomiyaKagawa 6.3
- 343ShidoKagawa 6.3
- 343OkayamaOkayama 6.3
- 343MachidaTokyo 6.3
- 343KyotoKyoto 6.3
- 343IseMie 6.3
- 343IchinomiyaAichi 6.3
- 343AyabeKyoto 6.3
- 343AtamiShizuoka 6.3
- 343OmigawaChiba 6.3
- 343KesennumaMiyagi 6.3
- 343KasamaIbaraki 6.3
- 343KinokawaWakayama 6.3
- 343AridaWakayama 6.3
- 359AkashiHyōgo 6.2
- 359NumazuShizuoka 6.2
- 359NakanojōGunma 6.2
- 359IbiGifu 6.2
- 359HōfuYamaguchi 6.2
- 359MiyakoIwate 6.2
- 359KikugawaShizuoka 6.2
- 359NisshinAichi 6.2
- 359MunakataFukuoka 6.2
- 368YoukaichiShiga 6.1
- 368YaitaTochigi 6.1
- 368ToyookaHyōgo 6.1
- 368SakaiOsaka 6.1
- 368OsakaOsaka 6.1
- 368NumataGunma 6.1
- 368NabariMie 6.1
- 368MatsumotoNagano 6.1
- 368HikoneShiga 6.1
- 368HashimotoWakayama 6.1
- 368NagatoYamaguchi 6.1
- 368YokoteAkita 6.1
- 368SendaiMiyagi 6.1
- 368IshiokaIbaraki 6.1
- 368HigashineYamagata 6.1
- 368ChikumaNagano 6.1
- 368TakizawaIwate 6.1
- 368NantanKyoto 6.1
- 386TochigiTochigi 6.0
- 386OwaseMie 6.0
- 386ObamaFukui 6.0
- 386NagaokaNiigata 6.0
- 386IidaNagano 6.0
- 386HekinanAichi 6.0
- 386GamagōriAichi 6.0
- 386MookaTochigi 6.0
- 386KatsuuraChiba 6.0
- 386SōsaChiba 6.0
- 386KumanoMie 6.0
- 386SennanOsaka 6.0
- 386TomeMiyagi 6.0
- 399YonagoTottori 5.9
- 399ShizuokaShizuoka 5.9
- 399ShinagawaEhime 5.9
- 399KōtariKyoto 5.9
- 399IzumiOsaka 5.9
- 399InoKochi 5.9
- 399IkomaNara 5.9
- 399HamamatsuShizuoka 5.9
- 399HakodateHokkaido 5.9
- 399AsahikawaHokkaido 5.9
- 399Minami-AlpsYamanashi 5.9
- 399IgaMie 5.9
- 399ShirakawaFukushima 5.9
- 412YamaguchiYamaguchi 5.8
- 412Ōdachō-ōdaShimane 5.8
- 412NagahamaShiga 5.8
- 412KusatsuShiga 5.8
- 412IzumoShimane 5.8
- 412IzumisanoOsaka 5.8
- 412GobōWakayama 5.8
- 412FujinomiyaShizuoka 5.8
- 412MitoIbaraki 5.8
- 412Kawachi-NaganoOsaka 5.8
- 412TsushimaNagasaki 5.8
- 423YaoOsaka 5.7
- 423UjiKyoto 5.7
- 423ToyohashiAichi 5.7
- 423ToyamaToyama 5.7
- 423TondabayashichōOsaka 5.7
- 423SuwaNagano 5.7
- 423ShimaMie 5.7
- 423SabaeFukui 5.7
- 423KakamigaharaGifu 5.7
- 423IwataShizuoka 5.7
- 423IkarugaHyōgo 5.7
- 423HagiYamaguchi 5.7
- 423HitachiIbaraki 5.7
- 423Hitachi-NakaIbaraki 5.7
- 423SusonoShizuoka 5.7
- 423SadoNiigata 5.7
- 423UnnanShimane 5.7
- 440Ueno-ebisumachiMie 5.6
- 440ShimadaShizuoka 5.6
- 440ŌtsuShiga 5.6
- 440Nara-shiNara 5.6
- 440MasudaShimane 5.6
- 440KobeHyōgo 5.6
- 440KameokaKyoto 5.6
- 440Kameda-honchōNiigata 5.6
- 440WakuyaMiyagi 5.6
- 440IkiNagasaki 5.6
- 450TanabeWakayama 5.5
- 450TakarazukaHyōgo 5.5
- 450SakaiminatoTottori 5.5
- 450NishinomiyaHyōgo 5.5
- 450NiigataNiigata 5.5
- 450MiyoshiHiroshima 5.5
- 450InuyamaAichi 5.5
- 450HirakataOsaka 5.5
- 450HimejiHyōgo 5.5
- 450HamadaShimane 5.5
- 450GotembaShizuoka 5.5
- 450FukuchiyamaKyoto 5.5
- 450TōganeChiba 5.5
- 450KitaibarakiIbaraki 5.5
- 450SapporoHokkaido 5.5
- 450TonamiToyama 5.5
- 450ŌshūIwate 5.5
- 450MinokamoGifu 5.5
- 450KizugawaKyoto 5.5
- 450JōyōKyoto 5.5
- 470YasugichōShimane 5.4
- 470OnoFukui 5.4
- 470NanaoIshikawa 5.4
- 470HakuiIshikawa 5.4
- 470GōtsuchōShimane 5.4
- 470Aizu-WakamatsuFukushima 5.4
- 470KuriharaMiyagi 5.4
- 470HabikinoOsaka 5.4
- 478ShironeNiigata 5.3
- 478NishiwakiHyōgo 5.3
- 478KomatsuIshikawa 5.3
- 478KitahamaShiga 5.3
- 478KitamiHokkaido 5.3
- 478MinamiuonumaNiigata 5.3
- 478MinamichitaAichi 5.3
- 485UedaNagano 5.2
- 485TsubataIshikawa 5.2
- 485Niitsu-honchōNiigata 5.2
- 485NiimiOkayama 5.2
- 485NaganoNagano 5.2
- 485MaizuruKyoto 5.2
- 485KogaIbaraki 5.2
- 485KanumaTochigi 5.2
- 485HamakitaShizuoka 5.2
- 485FujiedaShizuoka 5.2
- 485TomakomaiHokkaido 5.2
- 496TakayamaGifu 5.1
- 496SakuNagano 5.1
- 496MatsutōIshikawa 5.1
- 496MatsueShimane 5.1
- 496HitachiomiyaIbaraki 5.1
- 496IzunokuniShizuoka 5.1
- 496SayamaOsaka 5.1
- 503OgawamachiSaitama 5.0
- 503KagaIshikawa 5.0
- 503NasukarasuyamaTochigi 5.0
- 506TsurugaFukui 4.9
- 506ToyonakaOsaka 4.9
- 506MiyazuKyoto 4.9
- 506MakiNiigata 4.9
- 506ŌmihachimanShiga 4.9
- 506ObihiroHokkaido 4.9
- 512ShingūWakayama 4.8
- 512MinamiashigaraKanagawa 4.8
- 512OyabeToyama 4.8
- 512FujiyoshidaYamanashi 4.8
- 516KushiroHokkaido 4.7
- 517InaNagano 4.6
- 517AnamizuIshikawa 4.6
- 517YonoOsaka 4.6
- 520KanazawaIshikawa 4.5
- 520ImaichiTochigi 4.5
- 520KujiIwate 4.5
- 520KaizuGifu 4.5
- 524KyōtangoKyoto 4.4
- 525SumotoHyōgo 4.3
- 525OkayaNagano 4.3
- 527KamaishiIwate 4.0
- 528KōkaShiga 3.9
- 529GeroGifu 3.8
- 529NonoichiIshikawa 3.8
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+
All cities in the world, October 2025 · Japan now
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