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· Vietnam · Wednesday to Tuesday, UTC+7

Vietnam weekly air quality

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

72.6Weekly mean modelled AQI · Moderate

Mean PM2.5: 20 µg/m³. Both means cover the selected cities hour by hour. They are not a national average or Vietnam’s official index.

+12.4 AQI compared with the previous week’s mean of 60.2.

Highest hourly estimate: 221 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

5010070Wed80Thu79Fri82Sat70Sun59Mon68Tue
DayMean AQILow–highMean PM2.5 (µg/m³)City-hours
Wed, 26 Aug69.7Moderate25–17420.1192 / 192
Thu, 27 Aug80Moderate20–18719.6192 / 192
Fri, 28 Aug79.1Moderate19–22123.9192 / 192
Sat, 29 Aug82.3Moderate18–16221.6192 / 192
Sun, 30 Aug70.2Moderate20–17016.9192 / 192
Mon, 31 Aug59Moderate18–14418.2192 / 192
Tue, 1 Sep68Moderate17–15819.7192 / 192

Hourly means (UTC+7)

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

Day01234567891011121314151617181920212223
Wed585960616262636464646565666771768083858583807775
Thu727273747475757575757575757477828693979996918480
Fri767167676666666768707273747475798895101102101989589
Sat858279798080808180807979787878828589929190878479
Sun747372717069686867676767676767697781817974676463
Mon626160605959585858585858585858585860605858596062
Tue646465656666666666666666676767687073757574717069

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
Hanoi131.8Unhealthy for Sensitive Groups17248.9168 / 168
Hai Phong123.1Unhealthy for Sensitive Groups22142.9168 / 168
Ho Chi Minh City71.3Moderate8420.8168 / 168
Da Nang69.4Moderate1879.4168 / 168
Nha Trang56.6Moderate8212.2168 / 168
Can Tho56.2Moderate6712.6168 / 168
Hue48Good679.9168 / 168
Da Lat24.3Good353.2168 / 168

City-hours by category

Good: 300

Moderate: 731

Unhealthy for Sensitive Groups: 212

Unhealthy: 96

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.