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· Vietnam · Wednesday to Tuesday, UTC+7

Vietnam weekly air quality

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

69.3Weekly 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.

-6.6 AQI compared with the previous week’s mean of 75.9.

Highest hourly estimate: 182 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

5010062Wed85Thu74Fri63Sat63Sun66Mon72Tue
DayMean AQILow–highMean PM2.5 (µg/m³)City-hours
Wed, 27 Aug62.3Moderate35–12222.7192 / 192
Thu, 28 Aug85.1Moderate30–18226.5192 / 192
Fri, 29 Aug74.1Moderate24–16618.3192 / 192
Sat, 30 Aug62.5Moderate18–15413.1192 / 192
Sun, 31 Aug63.3Moderate22–15116.1192 / 192
Mon, 1 Sep66.1Moderate36–11817.3192 / 192
Tue, 2 Sep72Moderate28–15120.4192 / 192

Hourly means (UTC+7)

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

Day01234567891011121314151617181920212223
Wed545556565757585959606061626364656666676769707275
Thu778082848687878788888887878787868686868684838281
Fri817979787776757474747373737373737374747472706967
Sat656462615958575655545455555761667175767472696561
Sun595857575758585858585858606365687376777572696664
Mon636263636364646464646464656566686971737270696867
Tue666667676869707171717171717174757779797876757472

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
Hanoi116.7Unhealthy for Sensitive Groups18245.6168 / 168
Hai Phong93.1Moderate15831.9168 / 168
Ho Chi Minh City78.7Moderate9824.9168 / 168
Da Nang62.8Moderate1549.9168 / 168
Nha Trang62.2Moderate12012.5168 / 168
Hue58.3Moderate7213.9168 / 168
Can Tho46.9Good609168 / 168
Da Lat35.8Good516.1168 / 168

City-hours by category

Good: 307

Moderate: 863

Unhealthy for Sensitive Groups: 114

Unhealthy: 60

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.