haze

· Vietnam · Wednesday to Tuesday, UTC+7

Vietnam weekly air quality

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

78.8Weekly mean modelled AQI · Moderate

Mean PM2.5: 23.4 µg/m³. Both means cover the selected cities hour by hour. They are not a national average or Vietnam’s official index.

+14.9 AQI compared with the previous week’s mean of 63.9.

Highest hourly estimate: 154 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

5010071Wed68Thu74Fri78Sat77Sun89Mon95Tue
DayMean AQILow–highMean PM2.5 (µg/m³)City-hours
Wed, 7 Dec71.2Moderate23–12118.7192 / 192
Thu, 8 Dec67.6Moderate20–10220.3192 / 192
Fri, 9 Dec73.6Moderate31–10822.6192 / 192
Sat, 10 Dec78Moderate31–12425.6192 / 192
Sun, 11 Dec77.1Moderate34–13323.9192 / 192
Mon, 12 Dec89.4Moderate41–15429.3192 / 192
Tue, 13 Dec95Moderate47–15323.5192 / 192

Hourly means (UTC+7)

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

Day01234567891011121314151617181920212223
Wed737474747473737272717171717070707070707070706968
Thu676666666666666666666767686868696969696969697070
Fri707171717272737474747474747474747575757575757575
Sat757575757576767777777878787979798080818181818181
Sun818180807978787776767676767675757575757576787980
Mon81828283838383838384848586878890939598100102104104105
Tue105104104103101100989796959494949494949494959589868380

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
Hanoi114.3Unhealthy for Sensitive Groups15440.1168 / 168
Hai Phong92.8Moderate13931.3168 / 168
Ho Chi Minh City92.2Moderate12430.3168 / 168
Da Nang81.7Moderate15021.9168 / 168
Can Tho80.3Moderate9824.1168 / 168
Hue71.7Moderate12219.6168 / 168
Nha Trang61Moderate8114.5168 / 168
Da Lat36.7Good525.6168 / 168

City-hours by category

Good: 173

Moderate: 966

Unhealthy for Sensitive Groups: 183

Unhealthy: 22

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.