SmogRank / Countries / Japan / Nagasaki

Most polluted cities in Nagasaki, Japan

11 measured cities ranked by PM2.5, last 7 days. Worst: Togitsu at 8.2 µg/m³, #897 in the world.

#City µg/m³
1Togitsu Nagasaki
8.2
2Gotō Nagasaki
7.4
3Ōmura Nagasaki
6.9
4Isahaya Nagasaki
6.6
5Sasebo Nagasaki
6.4
6Tsushima Nagasaki
6.4
7Nagasaki Nagasaki
6.3
8Obita Nagasaki
6.2
9Saikai Nagasaki
6.1
10Matsuura Nagasaki
6.0
11Iki Nagasaki
4.0
Good 0–9.0Moderate 9.1+Unhealthy for sensitive groups 35.5+Unhealthy 55.5+Very unhealthy 125.5+Hazardous 225.5+No data

Estimated: cities without a monitor

Nagasaki 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.

City7-day estimateBand
Shimabara estimated≈ 8 µg/m³Good
Minamishimabara estimated≈ 8 µg/m³Good
Unzen estimated≈ 8 µg/m³Good
Hirado estimated≈ 5 µg/m³Good
Fukuechō estimated≈ 7 µg/m³Good
Kamigotō estimated≈ 6 µg/m³Good

Updated 2026-10-01 09:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.