SmogRank / World / Japan / Kagawa / March 2025

Most unhealthy days in Kagawa, Japan, March 2025

8 cities in Kagawa, Japan ranked by their share of unhealthy days over the 31 days. The most unhealthy days: Kan’onjichō, Japan, 2 of 30 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.

← Kan’onjichō 7% 6%0
Every city in Kagawa, Japan ranked for March 2025, 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. 1Kan’onjichō
    2 of 30
  2. 2Takamatsu
    2 of 31
  3. 2Shido
    2 of 31
  4. 4Zentsujichó
    2 of 31
  5. 5Marugame
    1 of 31
  6. 6Hiragi
    0 of 31
  7. 7Takinomiya
    0 of 29
  8. 8Tonoshō
    0 of 29
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 2025 · All cities in Japan, March 2025 · Kagawa now

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SmogRank, most polluted cities in Kagawa, Japan, by unhealthy days, PM2.5, March 2025, smogrank.com/jp/region/kagawa/history/2025-03?by=days (accessed 7 Oct 2026).

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