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Hanoi Unhealthy for Sensitive Groups

Hanoi, Hanoi

Updated: Mar 13, 2026, 8:00 PM

1210500
Unhealthy for Sensitive Groups

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

Current Weather

19.7°C
Temperature
84%
Humidity
4.2
mph wind
Overcast
Conditions

Pollutant Breakdown

121
PM2.5
µg/m³ · Fine particles
PM10
µg/m³ · Coarse particles
Ozone
ppb · Ground-level ozone
NO₂
ppb · Nitrogen dioxide
SO₂
ppb · Sulfur dioxide
CO
ppm · Carbon monoxide

Dominant pollutant: PM25

PM2.5 Forecast (next 7 days)

Wed
3/11
158
avg
Thu
3/12
164
avg
Fri
3/13
133
avg
Sat
3/14
120
avg
Sun
3/15
133
avg
Mon
3/16
131
avg
Tue
3/17
103
avg

Health Guidance

⚠️
Sensitive groups (asthma, heart disease, elderly, children): Reduce prolonged or heavy outdoor exertion.
General population: Unusually sensitive individuals should watch for symptoms.
💨
Keep windows closed if AQI is Unhealthy or above. Use HEPA air purifiers indoors.

Data from: UNIS - United Nations International School Of Hanoi, World Air Quality Index Project

Is the air safe in Hanoi today?

The current Air Quality Index (AQI) in Hanoi is 121, which is classified as "Unhealthy for Sensitive Groups". Members of sensitive groups may experience health effects. The general public is less likely to be affected.

The AQI scale runs from 0 to 500. Values of 0–50 are Good, 51–100 are Moderate, 101–150 are Unhealthy for Sensitive Groups, 151–200 are Unhealthy, 201–300 are Very Unhealthy, and 301–500 are Hazardous.

Air quality in Hanoi, Hanoi is monitored by local environmental agencies and reported through the World Air Quality Index project. Data is updated hourly and includes PM2.5, PM10, ozone, nitrogen dioxide, sulfur dioxide, and carbon monoxide.

AQI Scale Reference

0–50
Good
51–100
Moderate
101–150
Unhealthy for Sensitive Groups
151–200
Unhealthy
201–300
Very Unhealthy
301+
Hazardous