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· Vietnam · Wednesday to Tuesday, UTC+7

Vietnam weekly air quality

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

76.9Weekly mean modelled AQI · Moderate

Mean PM2.5: 20.8 µg/m³. Both means cover the selected cities hour by hour. They are not a national average or Vietnam’s official index.

-5.2 AQI compared with the previous week’s mean of 82.1.

Highest hourly estimate: 238 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

5010092Wed88Thu76Fri73Sat67Sun67Mon75Tue
DayMean AQILow–highMean PM2.5 (µg/m³)City-hours
Wed, 3 Apr92.1Moderate50–23827.1192 / 192
Thu, 4 Apr88.1Moderate51–22221.8192 / 192
Fri, 5 Apr76.4Moderate47–16221.5192 / 192
Sat, 6 Apr73.4Moderate40–14916.3192 / 192
Sun, 7 Apr66.8Moderate41–17017.3192 / 192
Mon, 8 Apr67.2Moderate52–16318.5192 / 192
Tue, 9 Apr74.7Moderate51–15422.9192 / 192

Hourly means (UTC+7)

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

Day01234567891011121314151617181920212223
Wed828282828282828282828383838592991101161181161121069789
Thu85858585848484848383828281818390100105107105100948578
Fri757575757474747474747575757575768184858381787574
Sat747474747575757574747372717170727781817874696664
Sun636363626362626363636363646464677478797875726966
Mon666666666565656565656464646464667176777572696767
Tue686970717172737374747575767676767880807977777777

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
Hanoi125.3Unhealthy for Sensitive Groups23843.6168 / 168
Hue101.6Unhealthy for Sensitive Groups17528.3168 / 168
Hai Phong87.1Moderate11229.6168 / 168
Da Nang75.6Moderate19917168 / 168
Da Lat59.3Moderate7613.1168 / 168
Can Tho58.2Moderate6912.7168 / 168
Ho Chi Minh City55.8Moderate6611.5168 / 168
Nha Trang52.5Moderate6310.7168 / 168

City-hours by category

Good: 62

Moderate: 1061

Unhealthy for Sensitive Groups: 157

Unhealthy: 51

Very Unhealthy: 13

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.