What is the air quality in Ōita?

Ōita, Japan has an annual US AQI of 61 (Polluted) and average PM2.5 of 14.8 µg/m³, ranking #2291 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Ōita?

December is typically the cleanest month (AQI 56) and May the most polluted (AQI 69).

Where does Ōita'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.

Ōita, Japan — Air Quality & Clean City Guide 2026

Ōita Air Quality Data

Global rank	City	Continent	AQI	PM2.5
2291	Ōita, Japan	Asia	AQI 61	PM2.5 14.8 µg/m³