What is the air quality in Koganei?

Koganei, Japan has an annual US AQI of 62 (Polluted) and average PM2.5 of 14.6 µg/m³, ranking #2335 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Koganei?

January is typically the cleanest month (AQI 58) and May the most polluted (AQI 69).

Where does Koganei's air quality data come from?

PM2.5: 1998–2025 (monitors 2011–2018, 2023–2025, satellite 1998–2011, 2018–2023; 2025 provisional). Measured by government monitoring stations. Full sources are on the methodology page.

Koganei, Japan — Air Quality & Clean City Guide 2026

Koganei Air Quality Data

Global rank	City	Continent	AQI	PM2.5
2335	Koganei, Japan	Asia	AQI 62	PM2.5 14.6 µg/m³