23 – 29 Nov 2022 · Vietnam · Wednesday to Tuesday, UTC+7

Vietnam weekly air quality

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

59.5Weekly mean modelled AQI · Moderate

Mean PM2.5: 14.7 µg/m³. Both means cover the selected cities hour by hour. They are not a national average or Vietnam’s official index.

-4.2 AQI compared with the previous week’s mean of 63.7.

Highest hourly estimate: 139 in Hanoi · 23 Nov, 00:00 GMT+7.

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

Day	Mean AQI	Low–high	Mean PM2.5 (µg/m³)	City-hours
Wed, 23 Nov	61.6Moderate	23–139	15.1	192 / 192
Thu, 24 Nov	58.4Moderate	28–111	12.9	192 / 192
Fri, 25 Nov	57.5Moderate	34–94	14.7	192 / 192
Sat, 26 Nov	60.2Moderate	33–99	15	192 / 192
Sun, 27 Nov	59.5Moderate	33–91	14.6	192 / 192
Mon, 28 Nov	58.6Moderate	36–87	14.7	192 / 192
Tue, 29 Nov	60.9Moderate	35–78	16.1	192 / 192

Hourly means (UTC+7)

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

Day	0	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23
Wed	69	68	67	65	65	64	63	62	62	61	61	61	61	60	60	59	59	59	59	59	59	59	59	59
Thu	60	60	60	59	59	59	59	58	58	59	58	59	59	59	59	59	59	58	58	58	57	57	57	57
Fri	56	56	56	56	56	56	56	57	57	57	58	58	58	58	58	58	58	58	58	59	59	59	59	59
Sat	60	60	60	60	60	61	61	61	61	61	61	60	60	60	60	60	60	60	60	60	60	60	60	60
Sun	60	60	60	60	60	61	60	60	60	60	60	60	59	59	59	59	59	59	59	59	59	59	59	59
Mon	59	59	58	58	58	58	58	58	58	58	58	58	58	59	59	59	59	59	59	59	60	60	60	60
Tue	60	60	60	60	60	60	60	60	60	60	60	60	61	61	61	62	62	62	62	63	63	63	63	62

Cities by modelled US AQI

Sorted by weekly mean. Each city is a single model grid cell near its centre.

City	Mean AQI	Peak AQI	Mean PM2.5 (µg/m³)	Hours
Hanoi	87Moderate	139	26.9	168 / 168
Ho Chi Minh City	68.9Moderate	98	18.4	168 / 168
Can Tho	64Moderate	75	16.6	168 / 168
Hue	63.6Moderate	76	16.7	168 / 168
Hai Phong	59.8Moderate	73	13.7	168 / 168
Da Nang	49.9Good	57	9.8	168 / 168
Nha Trang	48.5Good	54	9.4	168 / 168
Da Lat	34.4Good	40	6.4	168 / 168

City-hours by category

Good: 348

Moderate: 954

Unhealthy for Sensitive Groups: 42

Unhealthy: 0

Very Unhealthy: 0

Hazardous: 0

US AQI scale
AQI	Category
0–50	Good
51–100	Moderate
101–150	Unhealthy for Sensitive Groups
151–200	Unhealthy
201–300	Very 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.

Day	0	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23
Wed	69	68	67	65	65	64	63	62	62	61	61	61	61	60	60	59	59	59	59	59	59	59	59	59
Thu	60	60	60	59	59	59	59	58	58	59	58	59	59	59	59	59	59	58	58	58	57	57	57	57
Fri	56	56	56	56	56	56	56	57	57	57	58	58	58	58	58	58	58	58	58	59	59	59	59	59
Sat	60	60	60	60	60	61	61	61	61	61	61	60	60	60	60	60	60	60	60	60	60	60	60	60
Sun	60	60	60	60	60	61	60	60	60	60	60	60	59	59	59	59	59	59	59	59	59	59	59	59
Mon	59	59	58	58	58	58	58	58	58	58	58	58	58	59	59	59	59	59	59	59	60	60	60	60
Tue	60	60	60	60	60	60	60	60	60	60	60	60	61	61	61	62	62	62	62	63	63	63	63	62

Day	0	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23
Wed	69	68	67	65	65	64	63	62	62	61	61	61	61	60	60	59	59	59	59	59	59	59	59	59
Thu	60	60	60	59	59	59	59	58	58	59	58	59	59	59	59	59	59	58	58	58	57	57	57	57
Fri	56	56	56	56	56	56	56	57	57	57	58	58	58	58	58	58	58	58	58	59	59	59	59	59
Sat	60	60	60	60	60	61	61	61	61	61	61	60	60	60	60	60	60	60	60	60	60	60	60	60
Sun	60	60	60	60	60	61	60	60	60	60	60	60	59	59	59	59	59	59	59	59	59	59	59	59
Mon	59	59	58	58	58	58	58	58	58	58	58	58	58	59	59	59	59	59	59	59	60	60	60	60
Tue	60	60	60	60	60	60	60	60	60	60	60	60	61	61	61	62	62	62	62	63	63	63	63	62

Day	0	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23
Wed	69	68	67	65	65	64	63	62	62	61	61	61	61	60	60	59	59	59	59	59	59	59	59	59
Thu	60	60	60	59	59	59	59	58	58	59	58	59	59	59	59	59	59	58	58	58	57	57	57	57
Fri	56	56	56	56	56	56	56	57	57	57	58	58	58	58	58	58	58	58	58	59	59	59	59	59
Sat	60	60	60	60	60	61	61	61	61	61	61	60	60	60	60	60	60	60	60	60	60	60	60	60
Sun	60	60	60	60	60	61	60	60	60	60	60	60	59	59	59	59	59	59	59	59	59	59	59	59
Mon	59	59	58	58	58	58	58	58	58	58	58	58	58	59	59	59	59	59	59	59	60	60	60	60
Tue	60	60	60	60	60	60	60	60	60	60	60	60	61	61	61	62	62	62	62	63	63	63	63	62