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· Vietnam · Wednesday to Tuesday, UTC+7

Vietnam weekly air quality

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

77.5Weekly mean modelled AQI · Moderate

Mean PM2.5: 22.5 µg/m³. Both means cover the selected cities hour by hour. They are not a national average or Vietnam’s official index.

+4.1 AQI compared with the previous week’s mean of 73.4.

Highest hourly estimate: 169 in Hue · .

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

5010095Wed84Thu65Fri71Sat76Sun76Mon75Tue
DayMean AQILow–highMean PM2.5 (µg/m³)City-hours
Wed, 5 Mar95Moderate70–16931.5192 / 192
Thu, 6 Mar83.7Moderate62–12219192 / 192
Fri, 7 Mar65.4Moderate35–9517.3192 / 192
Sat, 8 Mar70.8Moderate31–13521192 / 192
Sun, 9 Mar76.2Moderate30–14722.9192 / 192
Mon, 10 Mar76.3Moderate25–16223.4192 / 192
Tue, 11 Mar75.3Moderate20–16022.1192 / 192

Hourly means (UTC+7)

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

Day01234567891011121314151617181920212223
Wed95959594939392919090919191919296102106106104101959494
Thu949493939392919089888785838281807877777674727170
Fri696868676766666665656565656565656464646565646464
Sat646465656666676768696969707071717479838279767373
Sun737374747475757676767677777777787879797877767676
Mon767676767676767677777777777777777777767676757574
Tue747474747474747576767676767676767677777676767675

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
Hanoi123.3Unhealthy for Sensitive Groups16246.1168 / 168
Hai Phong95.3Moderate11933.6168 / 168
Hue77.5Moderate16919.7168 / 168
Can Tho76.3Moderate12320.6168 / 168
Ho Chi Minh City74.3Moderate11921.2168 / 168
Da Nang66.2Moderate15015.4168 / 168
Nha Trang57.4Moderate8212.7168 / 168
Da Lat49.9Good9210.3168 / 168

City-hours by category

Good: 163

Moderate: 937

Unhealthy for Sensitive Groups: 200

Unhealthy: 44

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.