What is the air quality in Osaka?

Osaka, Japan has an annual US AQI of 61 (Polluted) and average PM2.5 of 14.5 µg/m³, ranking #2250 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Osaka?

September is typically the cleanest month (AQI 56) and May the most polluted (AQI 66).

Where does Osaka's air quality data come from?

PM2.5: 1998–2026 (monitors 2010–2026, satellite 1998–2010; 2025–2026 provisional). Measured by government monitoring stations. Full sources are on the methodology page.

Osaka, Japan — Air Quality & Clean City Guide 2026

Osaka Air Quality Data

Global rank	City	Continent	AQI	PM2.5
2250	Osaka, Japan	Asia	AQI 61	PM2.5 14.5 µg/m³