SmogRank / Countries / Japan

Most polluted cities in Japan

119 measured cities, last 24 hours; 0 above the WHO 24-hour guideline. Worst: Minato at 13.9 µg/m³, #163 in the world.

71 good  48 moderate

  1. 1MinatoWakayama 13.90.9×
  2. 2KumamotoKumamoto 13.80.9×
  3. 3OkayamaOkayama 13.30.9×
  4. 4AridaWakayama 13.30.9×
  5. 5SōjaOkayama 13.20.9×
  6. 6Kakogawachō-honmachiHyōgo 13.20.9×
  7. 7TogitsuNagasaki 13.00.9×
  8. 8SaseboNagasaki 13.00.9×
  9. 9KotōKumamoto 13.00.9×
  10. 10KobeHyōgo 12.90.9×
  11. 11TanabeWakayama 12.70.8×
  12. 12ŌitaOita 12.70.8×
  13. 13SumotoHyōgo 12.60.8×
  14. 14HigashigōSaga 12.50.8×
  15. 15UkihaFukuoka 12.50.8×
  16. 16GotōNagasaki 12.50.8×
  17. 17TakuSaga 12.10.8×
  18. 18Kanzakimachi-kanzakiSaga 11.90.8×
  19. 19MieOita 11.80.8×
  20. 20SakaiOsaka 11.70.8×
  21. 21KitakyushuFukuoka 11.70.8×
  22. 22HiroshimaHiroshima 11.60.8×
  23. 23SendaiKagoshima 11.50.8×
  24. 24HimejiHyōgo 11.50.8×
  25. 25TsukumiuraOita 11.30.8×
  26. 26TakeharaHiroshima 11.30.8×
  27. 27KagoshimaKagoshima 11.30.8×
  28. 28TsushimaNagasaki 11.10.7×
  29. 29KariyaAichi 11.00.7×
  30. 30HagiYamaguchi 11.00.7×
  31. 31ShimadaShizuoka 10.90.7×
  32. 32GamagōriAichi 10.50.7×
  33. 33OsakaOsaka 10.20.7×
  34. 34YanaiYamaguchi 10.10.7×
  35. 35IyoEhime 10.10.7×
  36. 36TsuMie 10.00.7×
  37. 37HijiOita 10.00.7×
  38. 38TakarazukaHyōgo 9.90.7×
  39. 39ŌtsuShiga 9.90.7×
  40. 40NōgataFukuoka 9.90.7×
  41. 41ToyonakaOsaka 9.60.6×
  42. 42IchinomiyaAichi 9.60.6×
  43. 43TokonameAichi 9.50.6×
  44. 44ToyookaHyōgo 9.40.6×
  45. 45Kaseda-shirakameKagoshima 9.40.6×
  46. 46YokohamaKanagawa 9.30.6×
  47. 47UwajimaEhime 9.30.6×
  48. 48YokosukaKanagawa 9.10.6×
  49. 49HachiōjiTokyo 9.00.6×
  50. 50Fukui-shiFukui 8.90.6×
  51. 51ToyotaAichi 8.80.6×
  52. 52TōkaiAichi 8.80.6×
  53. 53SuzukaMie 8.70.6×
  54. 54ShinshiroAichi 8.70.6×
  55. 55ChigasakiKanagawa 8.70.6×
  56. 56UjiKyoto 8.60.6×
  57. 57NagaiYamagata 8.60.6×
  58. 58KitahamaShiga 8.30.6×
  59. 59KisarazuChiba 8.30.6×
  60. 60NagoyaAichi 8.10.5×
  61. 61HiratsukaKanagawa 8.10.5×
  62. 62IseharaKanagawa 7.90.5×
  63. 63AiharaKanagawa 7.90.5×
  64. 64YufuOita 7.90.5×
  65. 65MinamibōsōChiba 7.80.5×
  66. 66FuefukiYamanashi 7.80.5×
  67. 67TokyoTokyo 7.70.5×
  68. 68TajimiGifu 7.70.5×
  69. 69KamakuraKanagawa 7.70.5×
  70. 70AsakaSaitama 7.70.5×
  71. 71NiizaSaitama 7.70.5×
  72. 72UrayasuChiba 7.60.5×
  73. 73KukichūōSaitama 7.60.5×
  74. 74HigashimurayamaTokyo 7.50.5×
  75. 75SakuraChiba 7.40.5×
  76. 76IbiGifu 7.30.5×
  77. 77SagaeYamagata 7.30.5×
  78. 78TokorozawaSaitama 7.20.5×
  79. 79KakudaMiyagi 7.20.5×
  80. 80JōetsuNiigata 7.20.5×
  81. 81KazoSaitama 7.00.5×
  82. 82IchiharaChiba 6.80.5×
  83. 83KamagayaChiba 6.80.5×
  84. 84NaganoNagano 6.70.4×
  85. 85OnoFukui 6.60.4×
  86. 86SayamaSaitama 6.50.4×
  87. 87IrumaSaitama 6.50.4×
  88. 88YonezawaYamagata 6.40.4×
  89. 89Tagajō-shiMiyagi 6.40.4×
  90. 90InzaiChiba 6.40.4×
  91. 91SanoTochigi 6.30.4×
  92. 92SendaiMiyagi 6.30.4×
  93. 93NodaChiba 6.20.4×
  94. 94ChibaChiba 6.20.4×
  95. 95YachiyoChiba 6.20.4×
  96. 96SakadoSaitama 6.10.4×
  97. 97MatsudoChiba 6.10.4×
  98. 98KoshigayaSaitama 6.10.4×
  99. 99AzaminoKanagawa 6.10.4×
  100. 100NarashinoChiba 6.10.4×
  101. 101OyamaTochigi 6.00.4×
  102. 102KatsuuraChiba 6.00.4×
  103. 103KōnosuSaitama 5.90.4×
  104. 104KanazawaIshikawa 5.90.4×
  105. 105HonjōSaitama 5.70.4×
  106. 106YoriiSaitama 5.60.4×
  107. 107SawaraChiba 5.60.4×
  108. 108FujiyoshidaYamanashi 5.60.4×
  109. 109ChikumaNagano 5.50.4×
  110. 110ImaichiTochigi 5.40.4×
  111. 111UenoharaYamanashi 5.30.4×
  112. 112UedaNagano 5.00.3×
  113. 113HitachiIbaraki 4.50.3×
  114. 114SakaiminatoTottori 4.40.3×
  115. 115HitachiomiyaIbaraki 4.40.3×
  116. 116YachimataChiba 4.30.3×
  117. 117HakodateHokkaido 3.90.3×
  118. 118AsahikawaHokkaido 3.60.2×
  119. 119KujiIwate 3.20.2×
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+

Estimated: cities without a monitor

Japan cities we can't measure, with model estimates for the last 7 days. Listed by population, not ranked: estimates aren't precise enough to rank. Model estimates from the Copernicus Atmosphere Monitoring Service (CAMS), adjusted to measured cities nearby where there are any. Adjusted, a single day lands within ×1.5 of what a monitor would read about two times in three; unadjusted, it can be off by half or double. Treat them as a guide, not a measurement.

City7-day estimateBand
Kawasaki≈ 10 µg/m³Moderate
Ōta≈ 10 µg/m³Moderate
Sagamihara≈ 6 µg/m³Good
Katsushika≈ 6 µg/m³Good
Suita≈ 8 µg/m³Good
Wakayama≈ 9 µg/m³Good
Nakano≈ 10 µg/m³Moderate
Maebashi≈ 7 µg/m³Good
Kita≈ 10 µg/m³Moderate
Naha≈ 8 µg/m³Good
Kasugai≈ 8 µg/m³Good
Ibaraki≈ 7 µg/m³Good
Minato City≈ 10 µg/m³Moderate
Chōfu≈ 10 µg/m³Moderate
Tsukuba≈ 8 µg/m³Good
Isesaki≈ 7 µg/m³Good
Nishi-Tokyo-shi≈ 10 µg/m³Moderate
Nagareyama≈ 5 µg/m³Good
Itami≈ 9 µg/m³Moderate
Hino≈ 10 µg/m³Moderate
Toyokawa≈ 6 µg/m³Good
Tachikawa≈ 10 µg/m³Moderate
Chūō≈ 10 µg/m³Moderate
Katsuta≈ 7 µg/m³Good
Kawanishi≈ 9 µg/m³Good
Musashino≈ 10 µg/m³Moderate
Komaki≈ 8 µg/m³Good
Tama≈ 10 µg/m³Moderate
Moriguchi≈ 8 µg/m³Good
Okinawa≈ 8 µg/m³Good
Shimotoda≈ 8 µg/m³Good
Yaizu≈ 5 µg/m³Good
Minoh≈ 8 µg/m³Good
Inazawa≈ 8 µg/m³Good
Ebetsu≈ 4 µg/m³Good
Zama≈ 6 µg/m³Good
Abiko≈ 6 µg/m³Good
Kadoma≈ 8 µg/m³Good
Matsubara≈ 8 µg/m³Good
Kokubunji≈ 10 µg/m³Moderate

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SmogRank, most polluted cities in Japan, PM2.5, last 24 hours to 2 Oct 2026, 00:00 UTC, smogrank.com/jp.

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Regions

Aichi 23Aomori 4Chiba 29Ehime 9Fukui 6Fukuoka 22Fukushima 6Gifu 15Gunma 6Hiroshima 12Hokkaido 8Hyōgo 17Ibaraki 19Ishikawa 9Iwate 8Kagawa 7Kagoshima 9Kanagawa 21Kochi 6Kumamoto 15Kyoto 14Mie 16Miyagi 15Miyazaki 8Nagano 10Nagasaki 11Nara 6Niigata 11Oita 9Okayama 10Osaka 16Saga 10Saitama 30Shiga 9Shimane 8Shizuoka 18Tochigi 9Tokushima 7Tokyo 10Tottori 2Toyama 5Wakayama 9Yamagata 9Yamaguchi 13Yamanashi 6

Measured cities in each region (30 days).

Updated 2026-10-02 00:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.