What is the air quality in Okayama?

Okayama, Japan has an annual US AQI of 60 (Reasonable) and average PM2.5 of 13.6 µg/m³, ranking #2048 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Okayama?

September is typically the cleanest month (AQI 54) and May the most polluted (AQI 67).

Where does Okayama's air quality data come from?

PM2.5: 1998–2026 (monitors 2012–2026, satellite 1998–2012; 2025–2026 provisional). Measured by government monitoring stations. Full sources are on the methodology page.

Okayama, Japan — Air Quality & Clean City Guide 2026

Okayama Air Quality Data

Global rank	City	Continent	AQI	PM2.5
2048	Okayama, Japan	Asia	AQI 60	PM2.5 13.6 µg/m³