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· Vietnam · Wednesday to Tuesday, UTC+7

Vietnam weekly air quality

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

65.8Weekly mean modelled AQI · Moderate

Mean PM2.5: 17.7 µg/m³. Both means cover the selected cities hour by hour. They are not a national average or Vietnam’s official index.

-8.1 AQI compared with the previous week’s mean of 73.9.

Highest hourly estimate: 191 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

5010067Wed71Thu70Fri64Sat61Sun61Mon67Tue
DayMean AQILow–highMean PM2.5 (µg/m³)City-hours
Wed, 17 Aug67Moderate26–14019.4192 / 192
Thu, 18 Aug70.8Moderate26–19118.3192 / 192
Fri, 19 Aug69.9Moderate28–15819.8192 / 192
Sat, 20 Aug64.3Moderate25–13116.1192 / 192
Sun, 21 Aug60.8Moderate30–9813.7192 / 192
Mon, 22 Aug60.6Moderate28–13715.6192 / 192
Tue, 23 Aug67.2Moderate29–11020.9192 / 192

Hourly means (UTC+7)

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

Day01234567891011121314151617181920212223
Wed676666656565656464646464646464646568717474747472
Thu706868686869696969696969696969697175777879787469
Fri676667676768686869696969707070707071757776747170
Sat707070696968676666656464646362626161606060606161
Sun616161606060606060606060606060606364656563615858
Mon585757575757575757575757585858586166717169676664
Tue636262636464656666676767676768686969707172737273

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
Hanoi101.5Unhealthy for Sensitive Groups19133.7168 / 168
Hai Phong86.8Moderate10827.9168 / 168
Ho Chi Minh City76.6Moderate10124.1168 / 168
Da Nang67.8Moderate14014.8168 / 168
Hue58.5Moderate6714.2168 / 168
Nha Trang54.7Moderate6111.3168 / 168
Can Tho49.1Good579.6168 / 168
Da Lat31.4Good485.8168 / 168

City-hours by category

Good: 265

Moderate: 962

Unhealthy for Sensitive Groups: 107

Unhealthy: 10

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.