What is the air quality in Kiryū?

Kiryū, Japan has an annual US AQI of 61 (Polluted) and average PM2.5 of 13.9 µg/m³, ranking #2198 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Kiryū?

January is typically the cleanest month (AQI 52) and May the most polluted (AQI 75).

Where does Kiryū's air quality data come from?

PM2.5: 1998–2025 (monitors 2014–2025, satellite 1998–2014; 2025 provisional). Measured by government monitoring stations. Full sources are on the methodology page.

Kiryū, Japan — Air Quality & Clean City Guide 2026

Kiryū Air Quality Data

Global rank	City	Continent	AQI	PM2.5
2198	Kiryū, Japan	Asia	AQI 61	PM2.5 13.9 µg/m³