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· Vietnam · Wednesday to Tuesday, UTC+7

Vietnam weekly air quality

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

73.1Weekly mean modelled AQI · Moderate

Mean PM2.5: 21.9 µg/m³. Both means cover the selected cities hour by hour. They are not a national average or Vietnam’s official index.

-0.5 AQI compared with the previous week’s mean of 73.6.

Highest hourly estimate: 167 in Hanoi · .

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

5010072Wed77Thu70Fri69Sat73Sun73Mon79Tue
DayMean AQILow–highMean PM2.5 (µg/m³)City-hours
Wed, 4 Dec71.7Moderate25–13922.3192 / 192
Thu, 5 Dec76.9Moderate22–15122.9192 / 192
Fri, 6 Dec69.8Moderate24–14420.1192 / 192
Sat, 7 Dec68.5Moderate19–13519.1192 / 192
Sun, 8 Dec72.9Moderate31–12222.1192 / 192
Mon, 9 Dec73.1Moderate37–13723.3192 / 192
Tue, 10 Dec79Moderate27–16723.1192 / 192

Hourly means (UTC+7)

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

Day01234567891011121314151617181920212223
Wed707070707070707071717272727373737473747473737373
Thu737474757676767777777778787878797979797878777776
Fri757574737271706969686867676767686868686970717169
Sat686868686767676767676768686970707171717170696968
Sun686869707071727474737373737374747576767675747475
Mon757575747372717071717172727272737373747475757677
Tue787980808080818181818080808080797979787877767575

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
Hanoi111.5Unhealthy for Sensitive Groups16743.7168 / 168
Ho Chi Minh City96.4Moderate13930.9168 / 168
Can Tho89.1Moderate12228.2168 / 168
Hai Phong88.6Moderate13529.5168 / 168
Hue65.2Moderate8017168 / 168
Da Nang60.9Moderate8614.8168 / 168
Nha Trang42.7Good537.5168 / 168
Da Lat30.8Good433.2168 / 168

City-hours by category

Good: 315

Moderate: 822

Unhealthy for Sensitive Groups: 179

Unhealthy: 28

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.