SmogRank / Countries / Japan / Kumamoto
Most polluted cities in Kumamoto, Japan
2 measured cities, last 24 hours; 0 above the WHO 24-hour guideline. Worst: Kumamoto at 13.8 µg/m³, #166 in the world.
2 moderate
Estimated: cities without a monitor
Kumamoto 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.
| City | 7-day estimate |
|---|---|
| Amakusa | ≈ 8 µg/m³ |
| Kōshi | ≈ 10 µg/m³ |
| Uki | ≈ 10 µg/m³ |
| Okino | ≈ 10 µg/m³ |
| Shimada | ≈ 10 µg/m³ |
| Matsubase | ≈ 10 µg/m³ |
| Ushibukamachi | ≈ 9 µg/m³ |
| Nagasu | ≈ 8 µg/m³ |
| Sashiki | ≈ 10 µg/m³ |
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SmogRank, most polluted cities in Kumamoto, Japan, PM2.5, last 24 hours to 2 Oct 2026, 00:00 UTC, smogrank.com/jp/region/kumamoto.
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Updated 2026-10-02 00:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.