What is the air quality in Chiba?

Chiba, Japan has an annual US AQI of 56 (Reasonable) and average PM2.5 of 12.2 µg/m³, ranking #1461 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Chiba?

September is typically the cleanest month (AQI 50) and May the most polluted (AQI 62).

Where does Chiba'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.

Chiba, Japan — Air Quality & Clean City Guide 2026

Chiba Air Quality Data

Global rank	City	Continent	AQI	PM2.5
1461	Chiba, Japan	Asia	AQI 56	PM2.5 12.2 µg/m³