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HanoiHà Nội · 30 Sept, 05:00 GMT+7101Modelled AQIHo Chi Minh CityThành phố Hồ Chí Minh · Saigon · 30 Sept, 05:00 GMT+7110Modelled AQIDa NangĐà Nẵng · 30 Sept, 05:00 GMT+7131Modelled AQIHai PhongHải Phòng · 30 Sept, 05:00 GMT+760Modelled AQICan ThoCần Thơ · 30 Sept, 05:00 GMT+7103Modelled AQIHueHuế · 30 Sept, 05:00 GMT+763Modelled AQINha Trang30 Sept, 05:00 GMT+752Modelled AQIDa LatĐà Lạt · 30 Sept, 05:00 GMT+732Modelled AQI

Hanoi: next 24 hours

Hourly model forecast · Asia/Ho Chi Minh local time. Forecasts can change as the model updates.

Forecast US AQI and PM2.5, not observed readings
Local timeModelled US AQIPM2.5 (µg/m³)
10229.4
10233.2
10232
10133.2
10237.4
10436.6
10536.7
10636.6
10737.3
14338.5
18039.8
20349.7
20957.4
20953
20446.4
18941.4
16239.5
12738
10637
10636.2
10635.7
10635.7
10735.5
10735.5

Where these estimates come from

For Hanoi, we request the model grid cell near 21.0285, 105.8542. Open-Meteo provides the Copernicus Atmosphere Monitoring Service (CAMS) global model at roughly 45 km resolution. Nearby places may share a grid cell, and local pollution can differ.

The AQI is the provider’s modelled US AQI across pollutants. PM2.5 is a concentration in µg/m³. We do not convert a single hourly PM2.5 concentration into a daily AQI. These estimates use a different basis from the measured PM2.5-derived AQI on our Malaysia and Singapore pages.

“Valid for” is the time represented by the model, not the time a sensor took a measurement or a model run was issued. The app checks for new estimates every 15 minutes. Older estimates and saved responses are labelled; missing values remain unavailable.

For official local readings and activity advice, visit Centre for Environmental Monitoring. Vietnam’s national index may use different breakpoints and averaging periods.

Air-quality data: Open-Meteo and CAMS, licensed under CC BY 4.0. Haze Monitor is independent of these providers and local authorities.

Vietnam · Turtle Tower, Hoan Kiem Lake

Hanoi air quality

Modelled US Air Quality Index (AQI)

101

Modelled estimate · CAMS / Open-Meteo

Air qualityUnhealthy for Sensitive Groups
GoodHazardous

Modelled · All pollutants · About this estimate

Valid for 44 min ago
PM2.5 27.6 µg/m³Modelled concentration · roughly 45 km grid
CAMS via Open-Meteo ↗
About Hanoi air quality

These are model estimates, not measurements from a local monitoring station or the official national index. Each city represents a roughly 45 km model grid cell, not a country average. Local pollution can differ.

The Turtle Tower, Hoan Kiem Lake scene is an illustration, not a live camera view. Haze follows the modelled AQI and lighting follows the city’s local time.

Official local readings and advice ↗ · Sources and methodology

Next 24 hours

Model forecast

Hanoi · Local time

Low 101High 209US AQI
06:0005:00
30 Sept, 06:00 GMT+7Unhealthy for Sensitive Groups102AQI

Forecasts can change. Missing hours remain unavailable.

Hourly AQI & PM2.5 details ↓

Vietnam cities