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· Vietnam · Wednesday to Tuesday, UTC+7

Vietnam weekly air quality

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

73.4Weekly mean modelled AQI · Moderate

Mean PM2.5: 21 µg/m³. Both means cover the selected cities hour by hour. They are not a national average or Vietnam’s official index.

+5.3 AQI compared with the previous week’s mean of 68.1.

Highest hourly estimate: 181 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

5010064Wed72Thu72Fri66Sat69Sun80Mon92Tue
DayMean AQILow–highMean PM2.5 (µg/m³)City-hours
Wed, 26 Feb63.8Moderate29–10017.1192 / 192
Thu, 27 Feb71.5Moderate26–15622192 / 192
Fri, 28 Feb72Moderate41–15417.7192 / 192
Sat, 1 Mar65.5Moderate43–11816192 / 192
Sun, 2 Mar69.3Moderate45–14818.3192 / 192
Mon, 3 Mar80.1Moderate58–17624.3192 / 192
Tue, 4 Mar91.7Moderate64–18131.9192 / 192

Hourly means (UTC+7)

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

Day01234567891011121314151617181920212223
Wed666665656464636363636363636363646565666564636363
Thu636465666768697072727272727373747578787775747574
Fri757575757574747372727171717171717274747371686767
Sat666666666565656564646464646464646871727067656363
Sun636363636363636363636364646467737984868683797469
Mon686869707071727373747475757580899610010110096918580
Tue808181828282838486878788899090951041081101101081049795

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
Hanoi110.9Unhealthy for Sensitive Groups15640.1168 / 168
Hue78.4Moderate18121.3168 / 168
Hai Phong77Moderate9022.8168 / 168
Da Nang74.1Moderate16817.3168 / 168
Can Tho71.4Moderate12421.7168 / 168
Ho Chi Minh City66.2Moderate9217.1168 / 168
Nha Trang60.7Moderate8516.1168 / 168
Da Lat48.9Good8312168 / 168

City-hours by category

Good: 136

Moderate: 1052

Unhealthy for Sensitive Groups: 120

Unhealthy: 36

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.