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· Vietnam · Wednesday to Tuesday, UTC+7

Vietnam weekly air quality

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

65.9Weekly mean modelled AQI · Moderate

Mean PM2.5: 18 µg/m³. Both means cover the selected cities hour by hour. They are not a national average or Vietnam’s official index.

+6.4 AQI compared with the previous week’s mean of 59.5.

Highest hourly estimate: 162 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

5010057Wed63Thu67Fri72Sat65Sun65Mon72Tue
DayMean AQILow–highMean PM2.5 (µg/m³)City-hours
Wed, 24 Jan57.2Moderate30–8414.8192 / 192
Thu, 25 Jan63.3Moderate31–9116.5192 / 192
Fri, 26 Jan67.3Moderate29–10719.8192 / 192
Sat, 27 Jan72.2Moderate33–14518.4192 / 192
Sun, 28 Jan64.7Moderate35–10216.4192 / 192
Mon, 29 Jan64.8Moderate30–11117.7192 / 192
Tue, 30 Jan71.9Moderate28–16222.1192 / 192

Hourly means (UTC+7)

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

Day01234567891011121314151617181920212223
Wed555555555656565656565757575758585859595959606060
Thu616161616161626262626262636363646567696968666464
Fri646363636364646464646565666667676972767775747270
Sat696969707070707171717171717070707480838380757067
Sun676666656565646464636363636363636468706967646363
Mon636363636364646463636363646464646667696969686766
Tue656667686969707070717171717272757678797877757373

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
Hanoi88.8Moderate16233.7168 / 168
Hai Phong82Moderate9626.8168 / 168
Ho Chi Minh City71Moderate14518.6168 / 168
Da Nang68.9Moderate10317.3168 / 168
Hue62.3Moderate6916168 / 168
Can Tho60.9Moderate11612.3168 / 168
Nha Trang58.6Moderate6413.6168 / 168
Da Lat35Good435.2168 / 168

City-hours by category

Good: 185

Moderate: 1118

Unhealthy for Sensitive Groups: 24

Unhealthy: 17

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.