SmogRank / World / Japan / Saitama / January 2024

Most unhealthy days in Saitama, Japan, January 2024

30 cities in Saitama, Japan ranked by their share of unhealthy days over the 31 days. The most unhealthy days: Misato, Saitama, Japan, 0 of 29 measured days. A city needs measurements on 70% of the days to be ranked.

Ranked by unhealthy days: the share of each city's measured days with a daily mean over 35.4 µg/m³ (US AQI 101+), Unhealthy for Sensitive Groups or worse on the US EPA's scale. Ties go to the higher average.

← Misato, Saitama 0% 0.75%0
Every city in Saitama, Japan ranked for January 2024, one column each, ranked by unhealthy days: height is the share of its measured days that were unhealthy, colour its average. Point at it to read a city; tap to open it.
  1. 1Misato, Saitama
    0 of 29
  2. 2Kazo
    0 of 31
  3. 3Gyōda
    0 of 31
  4. 4Sōka
    0 of 31
  5. 5Kasukabe
    0 of 31
  6. 6Kukichūō
    0 of 31
  7. 6Igusa
    0 of 31
  8. 6Hanyū
    0 of 31
  9. 9Koshigaya
    0 of 31
  10. 10Ageo
    0 of 31
  11. 11Kōnosu
    0 of 31
  12. 12Kawaguchi
    0 of 31
  13. 12Saitama
    0 of 31
  14. 14Asaka
    0 of 31
  15. 15Niiza
    0 of 31
  16. 16Sakado
    0 of 31
  17. 17Iruma
    0 of 31
  18. 18Kumagaya
    0 of 31
  19. 19Menuma
    0 of 31
  20. 19Higashi-Matsuyama
    0 of 31
  21. 21Tokorozawa
    0 of 30
  22. 22Morohongō
    0 of 31
  23. 23Chichibu
    0 of 31
  24. 24Sayama
    0 of 31
  25. 25Kawagoe
    0 of 31
  26. 26Yorii
    0 of 31
  27. 26Kodamachō-kodamaminami
    0 of 31
  28. 28Minano
    0 of 31
  29. 29Honjō
    0 of 31
  30. 30Ogawamachi
    0 of 31
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales

All cities in the world, January 2024 · All cities in Japan, January 2024 · Saitama now

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SmogRank, most polluted cities in Saitama, Japan, by unhealthy days, PM2.5, January 2024, smogrank.com/jp/region/saitama/history/2024-01?by=days (accessed 7 Oct 2026).

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