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· Vietnam · Wednesday to Tuesday, UTC+7

Vietnam weekly air quality

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

66.5Weekly mean modelled AQI · Moderate

Mean PM2.5: 19.2 µg/m³. Both means cover the selected cities hour by hour. They are not a national average or Vietnam’s official index.

-3.7 AQI compared with the previous week’s mean of 70.2.

Highest hourly estimate: 169 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

5010065Wed62Thu68Fri72Sat67Sun70Mon63Tue
DayMean AQILow–highMean PM2.5 (µg/m³)City-hours
Wed, 15 Oct65.1Moderate45–9917192 / 192
Thu, 16 Oct62Moderate25–11818.4192 / 192
Fri, 17 Oct67.8Moderate24–15121.5192 / 192
Sat, 18 Oct71.5Moderate30–16921.4192 / 192
Sun, 19 Oct67Moderate23–16421.4192 / 192
Mon, 20 Oct69.8Moderate19–14117.7192 / 192
Tue, 21 Oct62.6Moderate23–10017192 / 192

Hourly means (UTC+7)

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

Day01234567891011121314151617181920212223
Wed646464636464646565666666666666666666666666656565
Thu656564646362626160606060616161626262636362636363
Fri646465656667676868686868686868686969697070707171
Sat717272727273737373737373727272717171717070706968
Sun676767666665656565656565656666676868697070717171
Mon717069696868676767676768686869717375767674727068
Tue666563626261616161616161626263636464646363636464

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
Hanoi115.2Unhealthy for Sensitive Groups16942.4168 / 168
Ho Chi Minh City90.9Moderate12530.9168 / 168
Can Tho82.6Moderate9926168 / 168
Hai Phong69.4Moderate8919.7168 / 168
Hue54.1Moderate8611.5168 / 168
Da Nang52.1Moderate10310.7168 / 168
Nha Trang34.8Good536.3168 / 168
Da Lat33.3Good586.1168 / 168

City-hours by category

Good: 453

Moderate: 770

Unhealthy for Sensitive Groups: 75

Unhealthy: 46

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.