Hanoi Air Quality Index
Hanoi, Vietnam · Real-time AQI data
Members of sensitive groups may experience health effects. The general public is less likely to be affected.
Pollutant Breakdown
PM2.5
121µg/m³
Station: United Nations International School of Hanoi, Vietnam (Trường Quốc tế Liên Hợp Quốc Hà Nội) · Mar 18, 05:00 AM · Updates every 30 min
Health Recommendations
Members of sensitive groups may experience health effects. The general public is less likely to be affected.
How does Hanoi compare to other cities?
Compare →AQI Scale Reference
About Air Quality in Hanoi
The Air Quality Index (AQI) in Hanoi is measured using monitoring stations that track six key pollutants: PM2.5, PM10, ground-level ozone, nitrogen dioxide, sulfur dioxide, and carbon monoxide. The AQI is calculated using US EPA standards and ranges from 0 (excellent) to 500 (hazardous).
PM2.5 is typically the dominant pollutant in Hanoi during high-pollution periods. Fine particulate matter from traffic, industry, and seasonal factors can push AQI above 150, which is considered unhealthy for all groups.
Check the health effects guide to understand what today's AQI means for your activity level, or see the global AQI rankings to compare Hanoi with other cities worldwide.