What is the air quality in Ichihara?

Ichihara, Japan has an annual US AQI of 56 (Reasonable) and average PM2.5 of 12.3 µg/m³, ranking #1481 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Ichihara?

September is typically the cleanest month (AQI 51) and May the most polluted (AQI 63).

Where does Ichihara'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.

Ichihara, Japan — Air Quality & Clean City Guide 2026

Ichihara Air Quality Data

Global rank	City	Continent	AQI	PM2.5
1481	Ichihara, Japan	Asia	AQI 56	PM2.5 12.3 µg/m³