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· Vietnam · Wednesday to Tuesday, UTC+7

Vietnam weekly air quality

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

63.6Weekly mean modelled AQI · Moderate

Mean PM2.5: 17.1 µg/m³. Both means cover the selected cities hour by hour. They are not a national average or Vietnam’s official index.

-8.2 AQI compared with the previous week’s mean of 71.8.

Highest hourly estimate: 158 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

5010070Wed68Thu66Fri64Sat58Sun55Mon64Tue
DayMean AQILow–highMean PM2.5 (µg/m³)City-hours
Wed, 25 Oct69.6Moderate31–15818.8192 / 192
Thu, 26 Oct67.7Moderate38–15218192 / 192
Fri, 27 Oct66.4Moderate35–13618.2192 / 192
Sat, 28 Oct63.8Moderate36–13116192 / 192
Sun, 29 Oct58Moderate35–9212.9192 / 192
Mon, 30 Oct55.4Moderate24–8115.7192 / 192
Tue, 31 Oct64.3Moderate19–11619.9192 / 192

Hourly means (UTC+7)

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

Day01234567891011121314151617181920212223
Wed717171707069696869696969696970707171717070696968
Thu686867676767676666666666666666697273747370686666
Fri666666666666666666666666666666666667686867686868
Sat676767666665656463636363636364646464636361616161
Sun616161616161616160595958585857575656565555545454
Mon545454545454545454545555555656565656575758585959
Tue596060606060606161616262636364667073757270696767

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
Hanoi108.6Unhealthy for Sensitive Groups15837.4168 / 168
Ho Chi Minh City77.9Moderate11623.2168 / 168
Hai Phong72.5Moderate10320.9168 / 168
Can Tho71.4Moderate8820168 / 168
Da Nang51.5Moderate12411.5168 / 168
Hue48.6Good6310.2168 / 168
Nha Trang40.9Good507.3168 / 168
Da Lat37.4Good506.3168 / 168

City-hours by category

Good: 523

Moderate: 717

Unhealthy for Sensitive Groups: 79

Unhealthy: 25

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.