Hanoi air quality · Hà Nội, Vietnam
Wind speed and direction shape what you breathe right now
US AQI 72 (Moderate) in Hanoi, from 3 CEM monitoring stations. Main pollutant: PM2.5.
Updated
Pollutants in Hanoi
- PM2.5 · µg/m³20.4Under WHO limit
- PM10 · µg/m³44.5Under WHO limit
- NO₂ · µg/m³37.3Under WHO limit
- O₃ · µg/m³17.8
- SO₂ · µg/m³11.0Under WHO limit
Concentrations averaged across the city's stations. WHO multiples use the 2021 24-hour guidelines.
Is it safe outside in Hanoi right now?
Air quality is acceptable. People who are unusually sensitive to air pollution may feel effects with long or heavy exertion outdoors.
Walking and commuting
Go aheadFine for everyone.
Running and jogging
Take careFine for most; unusually sensitive people should ease the pace.
Cycling
Go aheadFine for everyone.
Children playing outside
Go aheadNo limits for most children.
Older adults and heart or lung conditions
Take careWatch for symptoms such as coughing or breathlessness.
Open windows
Go aheadFine to ventilate.
Mask outdoors
Not neededNot needed.
Air purifier indoors
Not neededOptional.
Based on the US EPA Air Quality Guide, applied to the current US AQI category. If you have symptoms, follow your doctor's advice.
What US AQI 51–100 means for your health →
Air quality by area in Hanoi
2 stations, worst first- Công viên Nhân Chính - Khuất Duy TiếnModerate73
- Số 1 đường Giải Phóng - phường Bạch MaiModerate71
Hanoi air quality history
Daily average, 35 days- 118average daily US AQI over 35 days
- 207worst day, 22 September
- 52cleanest day, 5 October
- 9days at Unhealthy or worse
The last 7 days averaged 131, better than the week before (165). None of the last 35 days was Good.
Nearby cities
Vietnam rankingRelated reading
Hanoi air quality: common questions
What is the AQI in Hanoi right now?
The US AQI in Hanoi is 72 (Moderate), based on 3 monitoring stations. The main pollutant is PM2.5.
Is it safe to go outside in Hanoi today?
Fine for most people. Air quality is acceptable. People who are unusually sensitive to air pollution may feel effects with long or heavy exertion outdoors. For runners: Fine for most; unusually sensitive people should ease the pace.
Which area of Hanoi has the worst air right now?
Công viên Nhân Chính - Khuất Duy Tiến has the highest reading at 73 (Moderate). Số 1 đường Giải Phóng - phường Bạch Mai has the lowest at 71, out of 2 stations reporting.
How has air quality in Hanoi been recently?
Over the last 35 days with data, Hanoi averaged US AQI 118. The worst day was 22 September at 207; the cleanest was 5 October at 52. 9 days were at Unhealthy or worse.
How does Hanoi's PM2.5 compare with the WHO guideline?
PM2.5 is 20 µg/m³, about 1.4 times the World Health Organization's 24-hour guideline of 15 µg/m³.
Where does Hanoi's air quality data come from?
From Center for Environmental Monitoring (CEM) · Envisoft, using 3 monitoring stations in and around the city. Good Air does not estimate or adjust these readings.
Source: Center for Environmental Monitoring (CEM) · Envisoft. Readings are published by the monitoring agency and may be revised.