What is the air quality in Toyohashi?

Toyohashi, Japan has an annual US AQI of 57 (Reasonable) and average PM2.5 of 12.4 µg/m³, ranking #1578 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Toyohashi?

December is typically the cleanest month (AQI 50) and May the most polluted (AQI 68).

Where does Toyohashi'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.

Toyohashi, Japan — Air Quality & Clean City Guide 2026

Toyohashi Air Quality Data

Global rank	City	Continent	AQI	PM2.5
1578	Toyohashi, Japan	Asia	AQI 57	PM2.5 12.4 µg/m³