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· Vietnam · Wednesday to Tuesday, UTC+7

Vietnam weekly air quality

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

70.7Weekly mean modelled AQI · Moderate

Mean PM2.5: 19.3 µg/m³. Both means cover the selected cities hour by hour. They are not a national average or Vietnam’s official index.

-28.6 AQI compared with the previous week’s mean of 99.3.

Highest hourly estimate: 216 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

5010064Wed74Thu65Fri65Sat69Sun85Mon73Tue
DayMean AQILow–highMean PM2.5 (µg/m³)City-hours
Wed, 26 Apr63.9Moderate43–10818.7192 / 192
Thu, 27 Apr73.5Moderate51–13419.5192 / 192
Fri, 28 Apr65Moderate52–10615.4192 / 192
Sat, 29 Apr64.9Moderate52–7618.3192 / 192
Sun, 30 Apr68.9Moderate54–10920.8192 / 192
Mon, 1 May85.3Moderate51–21626.9192 / 192
Tue, 2 May73.4Moderate41–16815.8192 / 192

Hourly means (UTC+7)

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

Day01234567891011121314151617181920212223
Wed646363636262626262616161626262626364666869707071
Thu707171717272727373737474747475767677787776747271
Fri706969686867676666666565656464636363626262626262
Sat626262626363636364646565666666676767676767676767
Sun686868696969696969696969686868686869696970707172
Mon737475767778798081818283848586879398101101100969287
Tue858382828180797877767574737372716968676565646363

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
Hanoi106.9Unhealthy for Sensitive Groups21638.2168 / 168
Hai Phong92.8Moderate19928.6168 / 168
Hue65.8Moderate7817.1168 / 168
Ho Chi Minh City65.7Moderate7617.2168 / 168
Da Nang64Moderate9415.9168 / 168
Can Tho62.7Moderate7515.3168 / 168
Nha Trang56.2Moderate6212.4168 / 168
Da Lat51.6Moderate599.9168 / 168

City-hours by category

Good: 50

Moderate: 1185

Unhealthy for Sensitive Groups: 68

Unhealthy: 36

Very Unhealthy: 5

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.