haze

· Vietnam · Wednesday to Tuesday, UTC+7

Vietnam weekly air quality

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

71.4Weekly mean modelled AQI · Moderate

Mean PM2.5: 21.3 µg/m³. Both means cover the selected cities hour by hour. They are not a national average or Vietnam’s official index.

+10.2 AQI compared with the previous week’s mean of 61.2.

Highest hourly estimate: 165 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

5010054Wed80Thu77Fri68Sat66Sun76Mon79Tue
DayMean AQILow–highMean PM2.5 (µg/m³)City-hours
Wed, 5 Nov54Moderate27–10018.6192 / 192
Thu, 6 Nov80.2Moderate26–16427.5192 / 192
Fri, 7 Nov77.4Moderate24–16520192 / 192
Sat, 8 Nov67.8Moderate28–15016192 / 192
Sun, 9 Nov65.6Moderate50–9518.8192 / 192
Mon, 10 Nov76Moderate44–14424.4192 / 192
Tue, 11 Nov78.7Moderate53–13623.5192 / 192

Hourly means (UTC+7)

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

Day01234567891011121314151617181920212223
Wed545353525251505050505050515253545557585960606263
Thu656870727577808182838384848485858585858484838281
Fri817978777675747373737373747474777983868584827976
Sat747271696868686868676665656566707375736863626263
Sun636464646565656666666666666666666666666767676768
Mon686970707071717273747474757577798183848484838281
Tue808080797979787877767676767676767880838482828180

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
Hanoi104.6Unhealthy for Sensitive Groups16540.3168 / 168
Ho Chi Minh City100Moderate14434.4168 / 168
Hai Phong75.8Moderate11323.4168 / 168
Can Tho75.2Moderate9922.7168 / 168
Da Nang63.9Moderate11314.2168 / 168
Hue60.3Moderate10515.5168 / 168
Nha Trang49.1Good9511168 / 168
Da Lat42.4Good618.5168 / 168

City-hours by category

Good: 246

Moderate: 932

Unhealthy for Sensitive Groups: 124

Unhealthy: 42

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.