What is the air quality in Hong Kong?

Hong Kong, Hong Kong has an annual US AQI of 87 (Polluted) and average PM2.5 of 27.6 µg/m³, ranking #4099 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Hong Kong?

June is typically the cleanest month (AQI 59) and January the most polluted (AQI 114).

Where does Hong Kong's air quality data come from?

PM2.5: 1998–2026 (monitors 1999–2026, satellite 1998; 2026 provisional). Measured by government monitoring stations. Full sources are on the methodology page.

Hong Kong, Hong Kong — Air Quality & Clean City Guide 2026

Hong Kong Air Quality Data

Global rank	City	Continent	AQI	PM2.5
4099	Hong Kong, Hong Kong	Asia	AQI 87	PM2.5 27.6 µg/m³