SmogRank / Countries / Japan / September 2026
Most polluted cities in Japan, September 2026
528 cities in Japan ranked by their average PM2.5 over the 30 days. Worst: Honmachi at 9.6 µg/m³, #427 of 2,332 cities in the world. Cleanest: Saku at 2.8. A city needs measurements on 70% of the days to be ranked.
- 1HonmachiKumamoto 9.6
- 2OnomichiHiroshima 9.5
- 3HitaOita 9.4
- 4ŌzuKumamoto 9.3
- 4KanoyaKagoshima 9.3
- 6KobayashiMiyazaki 9.1
- 6KamisuIbaraki 9.1
- 8Ōyanomachi-noboritateKumamoto 9.0
- 8MinamataKumamoto 9.0
- 10HitoyoshiKumamoto 8.9
- 10OwariasahiAichi 8.9
- 10HyūgaMiyazaki 8.9
- 13Uekimachi-mōnoKumamoto 8.8
- 13TakanabeMiyazaki 8.8
- 13Hondomachi-hondoKumamoto 8.8
- 13SaijōEhime 8.8
- 17ToyamaToyama 8.7
- 17NobeokaMiyazaki 8.7
- 17MiyakonojōMiyazaki 8.7
- 17AraoKumamoto 8.7
- 21TokiGifu 8.6
- 21FukuyamaHiroshima 8.6
- 23TamanaKumamoto 8.5
- 23KikuchiKumamoto 8.5
- 23KotōKumamoto 8.5
- 23MinamikyushuKagoshima 8.5
- 27Shin’ichiHiroshima 8.4
- 27NiihamaEhime 8.4
- 27ItoigawaNiigata 8.4
- 30KogaFukuoka 8.3
- 31Tottori-shiTottori 8.2
- 31Tanushimarumachi-toyokiFukuoka 8.2
- 31SusakiKochi 8.2
- 31NichinanMiyazaki 8.2
- 31KumamotoKumamoto 8.2
- 31KaniGifu 8.2
- 37UtoKumamoto 8.1
- 37ŌmutaFukuoka 8.1
- 37IzumiKagoshima 8.1
- 40SaseboNagasaki 8.0
- 40Maebaru-chūōFukuoka 8.0
- 40KitakyushuFukuoka 8.0
- 40KagoshimaKagoshima 8.0
- 40HekinanAichi 8.0
- 40KirishimaKagoshima 8.0
- 40BizenOkayama 8.0
- 47TogitsuNagasaki 7.9
- 47MifuneKumamoto 7.9
- 47BeppuOita 7.9
- 47GotōNagasaki 7.9
- 51SendaiKagoshima 7.8
- 51KandaFukuoka 7.8
- 51Imarichō-kōSaga 7.8
- 54OkazakiAichi 7.7
- 54FukuokaFukuoka 7.7
- 54Fukui-shiFukui 7.7
- 54IshinomakiMiyagi 7.7
- 54ShikokuchūōEhime 7.7
- 59TamanoOkayama 7.6
- 59AsahikawaHokkaido 7.6
- 59MatsuuraNagasaki 7.6
- 62TsuruokaYamagata 7.5
- 62TokonameAichi 7.5
- 62MieOita 7.5
- 62MatsuyamaEhime 7.5
- 62TsuchiuraIbaraki 7.5
- 62ShintomiMiyazaki 7.5
- 62ImizuToyama 7.5
- 62UkihaFukuoka 7.5
- 62HigashihiroshimaHiroshima 7.5
- 62TōkaiAichi 7.5
- 72NyūzenToyama 7.4
- 72MiyazakiMiyazaki 7.4
- 72KariyaAichi 7.4
- 72Kashima-shiIbaraki 7.4
- 72ImabariEhime 7.4
- 72InabeMie 7.4
- 72HigashigōSaga 7.4
- 72MatsusakaMie 7.4
- 80TsukumiuraOita 7.3
- 80MinatoWakayama 7.3
- 80Kan’onjichōKagawa 7.3
- 80NagaiYamagata 7.3
- 80AomoriAomori 7.3
- 80TsushimaNagasaki 7.3
- 86TsurusakiOita 7.2
- 86TakahashiOkayama 7.2
- 86TaharaAichi 7.2
- 86NishioAichi 7.2
- 86NagoyaAichi 7.2
- 86KushikinoKagoshima 7.2
- 86KureHiroshima 7.2
- 93YokkaichiMie 7.1
- 93TakeoSaga 7.1
- 93OnodaYamaguchi 7.1
- 93ŌmuraNagasaki 7.1
- 93IwadeWakayama 7.1
- 93IizukaFukuoka 7.1
- 93HigashiosakaOsaka 7.1
- 93HagiYamaguchi 7.1
- 93AmagasakiHyōgo 7.1
- 93SagaeYamagata 7.1
- 93HirosakiAomori 7.1
- 93YawatahamaEhime 7.1
- 105TajimiGifu 7.0
- 105SuzukaMie 7.0
- 105ShimonosekiYamaguchi 7.0
- 105NagahamaShiga 7.0
- 105MiharaHiroshima 7.0
- 105KogaFukuoka 7.0
- 105KashiwaraNara 7.0
- 105IkedachōTokushima 7.0
- 105HiroshimaHiroshima 7.0
- 105GifuGifu 7.0
- 105IyoEhime 7.0
- 105NakaIbaraki 7.0
- 105IwanumaMiyagi 7.0
- 105WakasugiFukuoka 7.0
- 105KuwanaMie 7.0
- 105MizuhoGifu 7.0
- 121TakeharaHiroshima 6.9
- 121TakaokaToyama 6.9
- 121TakamatsuKagawa 6.9
- 121TagawaFukuoka 6.9
- 121Shimo-tsumaIbaraki 6.9
- 121ShibukawaGunma 6.9
- 121SagaSaga 6.9
- 121ŌtakeHiroshima 6.9
- 121ŌitaOita 6.9
- 121MinamirinkanKanagawa 6.9
- 121KashimaSaga 6.9
- 121HandaAichi 6.9
- 121ChiryūAichi 6.9
- 121AnanTokushima 6.9
- 121AsoKumamoto 6.9
- 121HashimaGifu 6.9
- 121MunakataFukuoka 6.9
- 138SekimachiGifu 6.8
- 138NakamuraKochi 6.8
- 138NakamaFukuoka 6.8
- 138MarugameKagawa 6.8
- 138KochiKochi 6.8
- 138Kaseda-shirakameKagoshima 6.8
- 138Kanzakimachi-kanzakiSaga 6.8
- 138Kakogawachō-honmachiHyōgo 6.8
- 138KakamigaharaGifu 6.8
- 138AnjōAichi 6.8
- 138NiizaSaitama 6.8
- 138ShonaiYamagata 6.8
- 138AmaAichi 6.8
- 138ItoshimaFukuoka 6.8
- 152ShibataNiigata 6.7
- 152SakataYamagata 6.7
- 152NōgataFukuoka 6.7
- 152Narutochō-mitsuishiTokushima 6.7
- 152NakatsuOita 6.7
- 152NagasakiNagasaki 6.7
- 152HimimachiToyama 6.7
- 152GyōdaSaitama 6.7
- 152Natori-shiMiyagi 6.7
- 152KinokawaWakayama 6.7
- 152TakuSaga 6.7
- 152AridaWakayama 6.7
- 164ZentsujichóKagawa 6.6
- 164ToyotaAichi 6.6
- 164TenriNara 6.6
- 164SaikūMie 6.6
- 164SaikiOita 6.6
- 164KyotoKyoto 6.6
- 164KurashikiOkayama 6.6
- 164KaratsuSaga 6.6
- 164KameyamaMie 6.6
- 164InuyamaAichi 6.6
- 164KimitsuChiba 6.6
- 164YoshiokaMiyagi 6.6
- 164AmamiKagoshima 6.6
- 177ShidoKagawa 6.5
- 177SetoAichi 6.5
- 177MikuniFukui 6.5
- 177IsahayaNagasaki 6.5
- 177GionHiroshima 6.5
- 177KesennumaMiyagi 6.5
- 177KagaIshikawa 6.5
- 177HiragiKagawa 6.5
- 177YoshinogawaTokushima 6.5
- 177ShūnanYamaguchi 6.5
- 187YawataKyoto 6.4
- 187TokushimaTokushima 6.4
- 187SumotoHyōgo 6.4
- 187ObitaNagasaki 6.4
- 187NishiwakiHyōgo 6.4
- 187KurihamaKanagawa 6.4
- 187KiryūGunma 6.4
- 187KasaokaOkayama 6.4
- 187IzumoShimane 6.4
- 187HōfuYamaguchi 6.4
- 187AsakaSaitama 6.4
- 187HachinoheAomori 6.4
- 187MinokamoGifu 6.4
- 187YameFukuoka 6.4
- 187OgōriFukuoka 6.4
- 187AyaseKanagawa 6.4
- 187MineYamaguchi 6.4
- 204Ureshinomachi-shimojukuSaga 6.3
- 204UbeYamaguchi 6.3
- 204TomiokaGunma 6.3
- 204SakaiOsaka 6.3
- 204SabaeFukui 6.3
- 204OsakaOsaka 6.3
- 204NishinomiyaHyōgo 6.3
- 204MenumaSaitama 6.3
- 204KomatsuIshikawa 6.3
- 204KishiwadaOsaka 6.3
- 204Kamojimachō-jōgejimaTokushima 6.3
- 204HashimotoWakayama 6.3
- 204ShinjōYamagata 6.3
- 204ChitoseHokkaido 6.3
- 204NisshinAichi 6.3
- 204HigashikurumeTokyo 6.3
- 204MimaTokushima 6.3
- 221TosuSaga 6.2
- 221SōjaOkayama 6.2
- 221MasudaShimane 6.2
- 221KazoSaitama 6.2
- 221KainanWakayama 6.2
- 221IzumiOsaka 6.2
- 221IwakuniYamaguchi 6.2
- 221IchinomiyaAichi 6.2
- 221HakuiIshikawa 6.2
- 221HachiōjiTokyo 6.2
- 221GamagōriAichi 6.2
- 221FukuroiShizuoka 6.2
- 221AiharaKanagawa 6.2
- 221AgeoSaitama 6.2
- 221SakuraChiba 6.2
- 221MatsushimaMiyagi 6.2
- 221SapporoHokkaido 6.2
- 221TonamiToyama 6.2
- 221JōsōIbaraki 6.2
- 221JōetsuNiigata 6.2
- 221Kawachi-NaganoOsaka 6.2
- 221NankokuKochi 6.2
- 221SaikaiNagasaki 6.2
- 244YonagoTottori 6.1
- 244YanaiYamaguchi 6.1
- 244UozuToyama 6.1
- 244ToyookaHyōgo 6.1
- 244TondabayashichōOsaka 6.1
- 244TobaMie 6.1
- 244TanabeWakayama 6.1
- 244ShinagawaEhime 6.1
- 244SandachōHyōgo 6.1
- 244Ōdachō-ōdaShimane 6.1
- 244ObamaFukui 6.1
- 244MatsutōIshikawa 6.1
- 244KukichūōSaitama 6.1
- 244KoshigayaSaitama 6.1
- 244KobeHyōgo 6.1
- 244KawaguchiSaitama 6.1
- 244KameokaKyoto 6.1
- 244IzumisanoOsaka 6.1
- 244IseMie 6.1
- 244InoKochi 6.1
- 244HōryūjiNara 6.1
- 244HijiOita 6.1
- 244FukuchiyamaKyoto 6.1
- 244AyabeKyoto 6.1
- 244UwajimaEhime 6.1
- 244HigashineYamagata 6.1
- 244ObihiroHokkaido 6.1
- 244MuroranHokkaido 6.1
- 244TakashimaShiga 6.1
- 244Minami-SōmaFukushima 6.1
- 244BuzenFukuoka 6.1
- 244NantanKyoto 6.1
- 244AsakuchiOkayama 6.1
- 244KaminomaAichi 6.1
- 278ShingūWakayama 6.0
- 278TsubataIshikawa 6.0
- 278ŌtsuShiga 6.0
- 278OkayamaOkayama 6.0
- 278HigashinozoeHyōgo 6.0
- 278MiyoshiHiroshima 6.0
- 278MaizuruKyoto 6.0
- 278KudamatsuYamaguchi 6.0
- 278Kashihara-shiNara 6.0
- 278KariyaHyōgo 6.0
- 278KakudaMiyagi 6.0
- 278IwakiFukushima 6.0
- 278IchiharaChiba 6.0
- 278Higashi-MatsuyamaSaitama 6.0
- 278MotosuGifu 6.0
- 293AkashiHyōgo 5.9
- 293YokohamaKanagawa 5.9
- 293YasugichōShimane 5.9
- 293YaitaTochigi 5.9
- 293YaeHiroshima 5.9
- 293TsuyamaOkayama 5.9
- 293TsuMie 5.9
- 293TakinomiyaKagawa 5.9
- 293SōkaSaitama 5.9
- 293ŌtaGunma 5.9
- 293OnoHyōgo 5.9
- 293KōtariKyoto 5.9
- 293IkomaNara 5.9
- 293HonjōSaitama 5.9
- 293HikoneShiga 5.9
- 293YamagataYamagata 5.9
- 293ShiroishiMiyagi 5.9
- 293MoriokaIwate 5.9
- 293IchinosekiIwate 5.9
- 293InashikiIbaraki 5.9
- 293Misato, SaitamaSaitama 5.9
- 293KasugaFukuoka 5.9
- 293HigashimatsushimaMiyagi 5.9
- 293KaizuGifu 5.9
- 293SennanOsaka 5.9
- 293SugaiKyoto 5.9
- 293IgaMie 5.9
- 320YokotaTokyo 5.8
- 320YamaguchiYamaguchi 5.8
- 320TakatsukiOsaka 5.8
- 320TakarazukaHyōgo 5.8
- 320ShimaMie 5.8
- 320OnoFukui 5.8
- 320KusatsuShiga 5.8
- 320HanyūSaitama 5.8
- 320GōtsuchōShimane 5.8
- 320AioiHyōgo 5.8
- 320MinawaKanagawa 5.8
- 320Tagajō-shiMiyagi 5.8
- 320ŌharaChiba 5.8
- 320MobaraChiba 5.8
- 320ChibaChiba 5.8
- 320HakodateHokkaido 5.8
- 320SaitamaSaitama 5.8
- 320MinamichitaAichi 5.8
- 320KodairaTokyo 5.8
- 339YukuhashiFukuoka 5.7
- 339YokosukaKanagawa 5.7
- 339YaoOsaka 5.7
- 339UtsunomiyaTochigi 5.7
- 339UrayasuChiba 5.7
- 339TokyoTokyo 5.7
- 339NumataGunma 5.7
- 339NanaoIshikawa 5.7
- 339NabariMie 5.7
- 339KōnosuSaitama 5.7
- 339KisarazuChiba 5.7
- 339KashiwaChiba 5.7
- 339IgusaSaitama 5.7
- 339GobōWakayama 5.7
- 339ChigasakiKanagawa 5.7
- 339AshikagaTochigi 5.7
- 339AkiKochi 5.7
- 339NagatoYamaguchi 5.7
- 339YonezawaYamagata 5.7
- 339KitamiHokkaido 5.7
- 339UnnanShimane 5.7
- 360YoukaichiShiga 5.6
- 360YanagawaFukuoka 5.6
- 360TsurugaFukui 5.6
- 360ToyonakaOsaka 5.6
- 360ToyohashiAichi 5.6
- 360KaminokawaTochigi 5.6
- 360IbiGifu 5.6
- 360HamadaShimane 5.6
- 360HikariYamaguchi 5.6
- 360HanamakiIwate 5.6
- 360BandōIbaraki 5.6
- 360SōmaFukushima 5.6
- 360KamagayaChiba 5.6
- 373Ueno-ebisumachiMie 5.5
- 373NodaChiba 5.5
- 373Nara-shiNara 5.5
- 373NakanojōGunma 5.5
- 373NagaokaNiigata 5.5
- 373KawagoeSaitama 5.5
- 373KanazawaIshikawa 5.5
- 373YokoshibaChiba 5.5
- 373MookaTochigi 5.5
- 373MiyakoIwate 5.5
- 373KasamaIbaraki 5.5
- 373Hitachi-NakaIbaraki 5.5
- 373ChikuseiIbaraki 5.5
- 373InzaiChiba 5.5
- 373SadoNiigata 5.5
- 373TakizawaIwate 5.5
- 389SakadoSaitama 5.4
- 389OyamaTochigi 5.4
- 389KitahamaShiga 5.4
- 389KanumaTochigi 5.4
- 389HirakataOsaka 5.4
- 389HimejiHyōgo 5.4
- 389MitoIbaraki 5.4
- 389KumanoMie 5.4
- 389YachiyoChiba 5.4
- 389NoboritoKanagawa 5.4
- 389AzaminoKanagawa 5.4
- 389KizugawaKyoto 5.4
- 389TatsunoHyōgo 5.4
- 389MinamibōsōChiba 5.4
- 403UjiKyoto 5.3
- 403TateyamaChiba 5.3
- 403ShironeNiigata 5.3
- 403NiimiOkayama 5.3
- 403MorohongōSaitama 5.3
- 403KamakuraKanagawa 5.3
- 403IkarugaHyōgo 5.3
- 403NaritaChiba 5.3
- 403KushiroHokkaido 5.3
- 403AkishimaTokyo 5.3
- 403MinamiuonumaNiigata 5.3
- 414SanoTochigi 5.2
- 414Kodamachō-kodamaminamiSaitama 5.2
- 414KasukabeSaitama 5.2
- 414FujiShizuoka 5.2
- 414HokotaIbaraki 5.2
- 414SōsaChiba 5.2
- 414ŌsakiMiyagi 5.2
- 414HabikinoOsaka 5.2
- 414HigashimurayamaTokyo 5.2
- 414JōyōKyoto 5.2
- 414NarashinoChiba 5.2
- 425OdawaraKanagawa 5.1
- 425MiyazuKyoto 5.1
- 425MatsudoChiba 5.1
- 425KumagayaSaitama 5.1
- 425KofuYamanashi 5.1
- 425IseharaKanagawa 5.1
- 425HamamatsuShizuoka 5.1
- 425AnamizuIshikawa 5.1
- 425SayamaSaitama 5.1
- 425MiuraKanagawa 5.1
- 425TorideIbaraki 5.1
- 425OmigawaChiba 5.1
- 425IrumaSaitama 5.1
- 425SayamaOsaka 5.1
- 425FuchūTokyo 5.1
- 425ShirakawaFukushima 5.1
- 441YoriiSaitama 5.0
- 441MachidaTokyo 5.0
- 441HiratsukaKanagawa 5.0
- 441SendaiMiyagi 5.0
- 441ŌamiChiba 5.0
- 441KōriyamaFukushima 5.0
- 441OyabeToyama 5.0
- 441NasukarasuyamaTochigi 5.0
- 441KosaiShizuoka 5.0
- 441YamatoKanagawa 5.0
- 441IkiNagasaki 5.0
- 441KyōtangoKyoto 5.0
- 441FuefukiYamanashi 5.0
- 454AtsugiKanagawa 4.9
- 454NiigataNiigata 4.9
- 454Kameda-honchōNiigata 4.9
- 454IwataShizuoka 4.9
- 454HannōSaitama 4.9
- 454EbinaKanagawa 4.9
- 460TokorozawaSaitama 4.8
- 460ShimadaShizuoka 4.8
- 460NumazuShizuoka 4.8
- 460MakiNiigata 4.8
- 460HadanoKanagawa 4.8
- 460YachimataChiba 4.8
- 460SawaraChiba 4.8
- 460KatsuuraChiba 4.8
- 460IshiokaIbaraki 4.8
- 460AjikiChiba 4.8
- 460TomakomaiHokkaido 4.8
- 460GoshogawaraAomori 4.8
- 460SodegauraChiba 4.8
- 473ShimodaShizuoka 4.7
- 473MatsueShimane 4.7
- 473IidaNagano 4.7
- 473KikugawaShizuoka 4.7
- 473YonoOsaka 4.7
- 478ShinshiroAichi 4.6
- 478NonoichiIshikawa 4.6
- 478HamakitaShizuoka 4.6
- 478FujisawaKanagawa 4.6
- 478ChichibuSaitama 4.6
- 478YotsukaidōChiba 4.6
- 484GeroGifu 4.5
- 484TakayamaGifu 4.5
- 484ŌmeTokyo 4.5
- 484Niitsu-honchōNiigata 4.5
- 484ŌmihachimanShiga 4.5
- 484AtamiShizuoka 4.5
- 484TōganeChiba 4.5
- 484KitaibarakiIbaraki 4.5
- 484HitachiIbaraki 4.5
- 493ShizuokaShizuoka 4.4
- 493NaganoNagano 4.4
- 493HitachiomiyaIbaraki 4.4
- 493Minami-AlpsYamanashi 4.4
- 497SuzakaNagano 4.3
- 497OwaseMie 4.3
- 497ŌgakiGifu 4.3
- 497ImaichiTochigi 4.3
- 497TomeMiyagi 4.3
- 502SuwaNagano 4.2
- 502MatsumotoNagano 4.2
- 502Aizu-WakamatsuFukushima 4.2
- 502KuriharaMiyagi 4.2
- 506SusonoShizuoka 4.1
- 507KogaIbaraki 4.0
- 507KakegawaShizuoka 4.0
- 507MinamiashigaraKanagawa 4.0
- 510ŌtsukiYamanashi 3.9
- 511ChikumaNagano 3.8
- 511KōkaShiga 3.8
- 513UenoharaYamanashi 3.7
- 513OgawamachiSaitama 3.7
- 513FujiedaShizuoka 3.7
- 513KujiIwate 3.7
- 513ŌshūIwate 3.7
- 518KamaishiIwate 3.6
- 518FujiyoshidaYamanashi 3.6
- 520OkayaNagano 3.5
- 520GotembaShizuoka 3.5
- 520FujinomiyaShizuoka 3.5
- 520WakuyaMiyagi 3.5
- 524UedaNagano 3.1
- 524SakaiminatoTottori 3.1
- 524InaNagano 3.1
- 524IzunokuniShizuoka 3.1
- 528SakuNagano 2.8
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+
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