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· Vietnam · Wednesday to Tuesday, UTC+7

Vietnam weekly air quality

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

67.8Weekly mean modelled AQI · Moderate

Mean PM2.5: 18.9 µg/m³. Both means cover the selected cities hour by hour. They are not a national average or Vietnam’s official index.

-10.1 AQI compared with the previous week’s mean of 77.9.

Highest hourly estimate: 153 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

5010071Wed65Thu65Fri65Sat74Sun71Mon66Tue
DayMean AQILow–highMean PM2.5 (µg/m³)City-hours
Wed, 20 Nov70.6Moderate27–11817.7192 / 192
Thu, 21 Nov64.5Moderate23–10018192 / 192
Fri, 22 Nov64.7Moderate22–10418.9192 / 192
Sat, 23 Nov64.8Moderate21–10419.6192 / 192
Sun, 24 Nov73.9Moderate19–14521.7192 / 192
Mon, 25 Nov71.1Moderate19–15320.8192 / 192
Tue, 26 Nov65.5Moderate28–14415.7192 / 192

Hourly means (UTC+7)

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

Day01234567891011121314151617181920212223
Wed737273737272727171717171717171717171727068676665
Thu656464646465656565656565656465646465666564646464
Fri636464646464646464656565656565666666666565656565
Sat656565646464636363636364646465656566666667666667
Sun676869707172747576767677777777767676767574747372
Mon727171717070707070707070707171717172727272737373
Tue737272717069686766656464636363636262626262636363

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
Ho Chi Minh City104.1Unhealthy for Sensitive Groups14536.2168 / 168
Hanoi102.4Unhealthy for Sensitive Groups15333.2168 / 168
Can Tho80.6Moderate9824.6168 / 168
Hai Phong72.7Moderate8220.7168 / 168
Hue58.6Moderate6813.1168 / 168
Da Nang55.4Moderate7411.7168 / 168
Nha Trang40.4Good527.5168 / 168
Da Lat28.6Good394.5168 / 168

City-hours by category

Good: 313

Moderate: 881

Unhealthy for Sensitive Groups: 139

Unhealthy: 11

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.