SmogRank / World / Japan / Saitama / March 2024

Most unhealthy days in Saitama, Japan, March 2024

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

OpenAQ's archive, where our readings come from, has almost none from Japan for March 21, 2024: cities in Japan are averaged over their other days. Why.

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 March 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. 1Kazo
    0 of 30
  2. 2Igusa
    0 of 30
  3. 3Iruma
    0 of 30
  4. 4Sōka
    0 of 30
  5. 4Gyōda
    0 of 30
  6. 4Asaka
    0 of 30
  7. 7Kawaguchi
    0 of 30
  8. 8Sakado
    0 of 30
  9. 8Kukichūō
    0 of 30
  10. 8Higashi-Matsuyama
    0 of 30
  11. 11Kōnosu
    0 of 30
  12. 11Niiza
    0 of 30
  13. 11Saitama
    0 of 30
  14. 14Ageo
    0 of 30
  15. 15Kasukabe
    0 of 30
  16. 16Kodamachō-kodamaminami
    0 of 30
  17. 17Yorii
    0 of 30
  18. 17Menuma
    0 of 30
  19. 17Koshigaya
    0 of 30
  20. 20Tokorozawa
    0 of 29
  21. 20Hanyū
    0 of 30
  22. 22Morohongō
    0 of 30
  23. 22Kumagaya
    0 of 30
  24. 24Chichibu
    0 of 30
  25. 25Sayama
    0 of 30
  26. 26Minano
    0 of 30
  27. 27Honjō
    0 of 30
  28. 28Kawagoe
    0 of 30
  29. 29Ogawamachi
    0 of 30
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, March 2024 · All cities in Japan, March 2024 · Saitama now

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SmogRank, most polluted cities in Saitama, Japan, by unhealthy days, PM2.5, March 2024, smogrank.com/jp/region/saitama/history/2024-03?by=days (accessed 7 Oct 2026).

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You're welcome to reuse a single chart, image or figure with this citation and a link. Terms. Raw monitor readings in bulk are published by OpenAQ, under each provider's licence.