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· Vietnam · Wednesday to Tuesday, UTC+7

Vietnam weekly air quality

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

71.2Weekly mean modelled AQI · Moderate

Mean PM2.5: 19.2 µg/m³. Both means cover the selected cities hour by hour. They are not a national average or Vietnam’s official index.

-11.8 AQI compared with the previous week’s mean of 83.

Highest hourly estimate: 224 in Hai Phong · .

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

5010080Wed74Thu67Fri68Sat72Sun67Mon70Tue
DayMean AQILow–highMean PM2.5 (µg/m³)City-hours
Wed, 28 Aug80.1Moderate36–22122.2192 / 192
Thu, 29 Aug74.4Moderate26–19618.6192 / 192
Fri, 30 Aug67.1Moderate20–17616.5192 / 192
Sat, 31 Aug68Moderate22–16018.4192 / 192
Sun, 1 Sep72.4Moderate35–19218.5192 / 192
Mon, 2 Sep66.6Moderate37–16616.6192 / 192
Tue, 3 Sep70Moderate33–22423.2192 / 192

Hourly means (UTC+7)

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

Day01234567891011121314151617181920212223
Wed737272727372727373737474747477859510110310196898275
Thu737372727271717170707070696972758187898883777370
Fri676666666665656564646463636363646875787977726662
Sat626263636363646465656566666972767778777774706666
Sun666667676767676767676768717579818487888579716868
Mon676767676766666666656565646464636569737473696564
Tue636464646464656565656565666666677280838483818182

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
Hanoi139Unhealthy for Sensitive Groups22149.8168 / 168
Hai Phong89.6Moderate22429.8168 / 168
Da Nang77.6Moderate19214.8168 / 168
Ho Chi Minh City70.9Moderate8920168 / 168
Hue58.4Moderate8213168 / 168
Nha Trang57.1Moderate8411.9168 / 168
Can Tho42.2Good537.7168 / 168
Da Lat34.8Good446.1168 / 168

City-hours by category

Good: 354

Moderate: 762

Unhealthy for Sensitive Groups: 148

Unhealthy: 68

Very Unhealthy: 12

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.