28 October 2026
Hanoi, Vietnam
Air quality in Hanoi is forecast to reach US AQI 183 (Unhealthy), peaking around 18:00 local time. Everyone may feel effects. Limit time outdoors and consider a mask outside. At that hour the model has PM2.5 49.9 ug/m3 and PM10 50.8 ug/m3. The US AQI is the worst sub-index across all measured pollutants, so it can be driven by ozone rather than particulates. This is a CAMS model forecast published by Open-Meteo, not a reading from a ground monitoring station, so a station near you may report a different number.
Vietnam Air Quality Alerts calendar