What is the air quality in Kitakyūshū?

Kitakyūshū, Japan has an annual US AQI of 63 (Polluted) and average PM2.5 of 15.1 µg/m³, ranking #2478 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Kitakyūshū?

September is typically the cleanest month (AQI 57) and May the most polluted (AQI 74).

Where does Kitakyūshū's air quality data come from?

PM2.5: 1998–2026 (monitors 2011–2026, satellite 1998–2011; 2025–2026 provisional). Measured by government monitoring stations. Full sources are on the methodology page.

Kitakyūshū, Japan — Air Quality & Clean City Guide 2026

Kitakyūshū Air Quality Data

Global rank	City	Continent	AQI	PM2.5
2478	Kitakyūshū, Japan	Asia	AQI 63	PM2.5 15.1 µg/m³