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· Vietnam · Wednesday to Tuesday, UTC+7

Vietnam weekly air quality

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

73.8Weekly mean modelled AQI · Moderate

Mean PM2.5: 22.2 µg/m³. Both means cover the selected cities hour by hour. They are not a national average or Vietnam’s official index.

-2.8 AQI compared with the previous week’s mean of 76.6.

Highest hourly estimate: 180 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

5010071Wed65Thu64Fri68Sat72Sun87Mon89Tue
DayMean AQILow–highMean PM2.5 (µg/m³)City-hours
Wed, 10 May71.3Moderate53–10417.4192 / 192
Thu, 11 May65.4Moderate53–9017.2192 / 192
Fri, 12 May63.7Moderate38–8717.1192 / 192
Sat, 13 May67.9Moderate39–9919.5192 / 192
Sun, 14 May72.2Moderate41–16024.4192 / 192
Mon, 15 May87.2Moderate32–18031192 / 192
Tue, 16 May89Moderate39–16629.1192 / 192

Hourly means (UTC+7)

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

Day01234567891011121314151617181920212223
Wed777776767675757574737372717170696868676666666666
Thu666666656565656465656565656566666666666666666666
Fri666565656464646464646363636363636363636363636364
Sat646465656566666767686868686868686969696971727373
Sun737272717069686869696969697070727477777777777778
Mon798082838384848585868686878990919393939392919088
Tue8888888887878684828281818181838893101105105103989188

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
Hai Phong106.1Unhealthy for Sensitive Groups18043.4168 / 168
Hanoi103Unhealthy for Sensitive Groups17636.8168 / 168
Ho Chi Minh City73.6Moderate10022.1168 / 168
Can Tho70.1Moderate8419.4168 / 168
Da Nang69.3Moderate16617.2168 / 168
Hue65.7Moderate10617.8168 / 168
Nha Trang54.6Moderate7011.6168 / 168
Da Lat48Good609.6168 / 168

City-hours by category

Good: 135

Moderate: 1069

Unhealthy for Sensitive Groups: 68

Unhealthy: 72

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.