What is the air quality in Changhua City?

Changhua City, Taiwan has an annual US AQI of 74 (Polluted) and average PM2.5 of 21.3 µg/m³, ranking #3479 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Changhua City?

June is typically the cleanest month (AQI 53) and March the most polluted (AQI 92).

Where does Changhua City's air quality data come from?

PM2.5: 1998–2026 (monitors 2022–2026, satellite 1998–2021; 2026 provisional). Measured by government monitoring stations. Full sources are on the methodology page.

Changhua City, Taiwan — Air Quality & Clean City Guide 2026

Changhua City Air Quality Data

Global rank	City	Continent	AQI	PM2.5
3479	Changhua City, Taiwan	Asia	AQI 74	PM2.5 21.3 µg/m³