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· Vietnam · Wednesday to Tuesday, UTC+7

Vietnam weekly air quality

Modelled US AQI · 8 cities · CAMS via Open-Meteo

74.3Weekly mean modelled AQI · Moderate

Mean PM2.5: 20.9 µg/m³. Both means cover the selected cities hour by hour. They are not a national average or Vietnam’s official index.

+4.7 AQI compared with the previous week’s mean of 69.6.

Highest hourly estimate: 171 in Hue · .

1344 of 1344 city-hours have a modelled AQI. These are estimates for roughly 45 km model grid cells, not monitoring-station measurements. How this report is made

Daily modelled US AQI

5010073Wed88Thu78Fri72Sat71Sun71Mon67Tue
DayMean AQILow–highMean PM2.5 (µg/m³)City-hours
Wed, 20 Mar72.7Moderate54–12625.1192 / 192
Thu, 21 Mar87.9Moderate37–16727.1192 / 192
Fri, 22 Mar77.8Moderate37–16018.9192 / 192
Sat, 23 Mar72.1Moderate46–17119.1192 / 192
Sun, 24 Mar71.2Moderate54–15119.6192 / 192
Mon, 25 Mar71.1Moderate55–14418.5192 / 192
Tue, 26 Mar66.9Moderate40–10417.9192 / 192

Hourly means (UTC+7)

Each cell averages the selected cities’ modelled AQI for that hour.

Day01234567891011121314151617181920212223
Wed686868686969707071717272737374747575767677787980
Thu828385868687878888898989898990909193949289878685
Fri848382818080797877767574747374778285848177737169
Sat696969696969696969696868686869727883868581757170
Sun707070706969706970697070707070727578797773717171
Mon707070707070707070696969696969717578817974696868
Tue686868686868686767676767676767676766666666666666

Cities by modelled US AQI

Sorted by weekly mean. Each city is a single model grid cell near its centre.

CityMean AQIPeak AQIMean PM2.5 (µg/m³)Hours
Hanoi109.8Unhealthy for Sensitive Groups16740.7168 / 168
Hue96.9Moderate17131168 / 168
Hai Phong84.1Moderate14326.3168 / 168
Da Nang73.9Moderate12018.6168 / 168
Ho Chi Minh City58.7Moderate8613.3168 / 168
Can Tho58.6Moderate6813.3168 / 168
Nha Trang57.9Moderate6313.1168 / 168
Da Lat54.1Moderate6710.9168 / 168

City-hours by category

Good: 55

Moderate: 1090

Unhealthy for Sensitive Groups: 166

Unhealthy: 33

Very Unhealthy: 0

Hazardous: 0

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

How this report is made

Open-Meteo provides hourly estimates from the Copernicus Atmosphere Monitoring Service (CAMS) global model at roughly 45 km resolution. We use the grid cell nearest each city’s centre. Nearby places may share a cell, and local pollution can differ.

The AQI is the provider’s modelled US AQI across pollutants, one value per city per hour. Weekly, daily and hourly means average those values across the selected cities. PM2.5 is a concentration in µg/m³. These figures use a different basis from the measured PM2.5-derived AQI in the Malaysia and Singapore reports.

Days and hours use UTC+7. The report includes past model hours only, never forecasts. The previous-week comparison appears only when at least 90% of that week’s city-hours are available.

For official local readings and advice, visit Centre for Environmental Monitoring. Air-quality data: Open-Meteo and CAMS, licensed under CC BY 4.0. Haze Monitor is independent of these providers and local authorities.