What is the air quality in Hạ Long?

Hạ Long, Vietnam has an annual US AQI of 83 (Polluted) and average PM2.5 of 25.7 µg/m³, ranking #3923 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Hạ Long?

July is typically the cleanest month (AQI 58) and December the most polluted (AQI 109).

PM2.5: 1998–2024 (satellite). From satellite data, because no government monitor covers the city. Full sources are on the methodology page.

Global rank	City	Continent	AQI	PM2.5
3923	Hạ Long, Vietnam	Asia	AQI 83	PM2.5 25.7 µg/m³