SmogRank / World / Japan / Saitama / December 2023

Most unhealthy days in Saitama, Japan, December 2023

29 cities in Saitama, Japan ranked by their share of unhealthy days over the 31 days. The most unhealthy days: Kazo, Japan, 0 of 31 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.

← Kazo 0% 0.75%0
Every city in Saitama, Japan ranked for December 2023, 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. 1Kazo
    0 of 31
  2. 2Igusa
    0 of 31
  3. 2Gyōda
    0 of 31
  4. 2Misato, Saitama
    0 of 31
  5. 5Kōnosu
    0 of 30
  6. 6Kukichūō
    0 of 31
  7. 7Kasukabe
    0 of 31
  8. 8Sōka
    0 of 31
  9. 9Ageo
    0 of 31
  10. 10Koshigaya
    0 of 31
  11. 11Niiza
    0 of 31
  12. 12Kawaguchi
    0 of 31
  13. 12Asaka
    0 of 31
  14. 14Tokorozawa
    0 of 29
  15. 14Higashi-Matsuyama
    0 of 31
  16. 16Sakado
    0 of 31
  17. 16Saitama
    0 of 31
  18. 18Iruma
    0 of 31
  19. 19Kumagaya
    0 of 31
  20. 20Menuma
    0 of 31
  21. 21Kawagoe
    0 of 31
  22. 22Morohongō
    0 of 31
  23. 23Hannō
    0 of 31
  24. 24Yorii
    0 of 31
  25. 24Kodamachō-kodamaminami
    0 of 31
  26. 26Sayama
    0 of 31
  27. 27Chichibu
    0 of 31
  28. 28Honjō
    0 of 31
  29. 29Ogawamachi
    0 of 26
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, December 2023 · All cities in Japan, December 2023 · Saitama now

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SmogRank, most polluted cities in Saitama, Japan, by unhealthy days, PM2.5, December 2023, smogrank.com/jp/region/saitama/history/2023-12?by=days (accessed 7 Oct 2026).

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