17 – 23 Jan 2024 · 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: 14.1 µg/m³. Both means cover the selected cities hour by hour. They are not a national average or Vietnam’s official index.

-9.1 AQI compared with the previous week’s mean of 68.6.

Highest hourly estimate: 101 in Ho Chi Minh City · 19 Jan, 19:00 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, 17 Jan	62.2Moderate	24–91	13.7	192 / 192
Thu, 18 Jan	58.8Moderate	26–94	15	192 / 192
Fri, 19 Jan	60.1Moderate	36–101	14.5	192 / 192
Sat, 20 Jan	60.7Moderate	37–86	15.5	192 / 192
Sun, 21 Jan	62.6Moderate	43–80	16.2	192 / 192
Mon, 22 Jan	59.3Moderate	29–86	11.6	192 / 192
Tue, 23 Jan	52.6Moderate	29–65	12.4	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	67	66	66	66	65	65	64	64	64	63	63	62	62	62	62	61	61	61	60	60	59	58	58	57
Thu	57	57	57	57	57	57	57	57	57	57	57	57	57	58	58	58	59	63	66	66	64	62	60	60
Fri	60	60	60	60	60	60	60	60	60	60	60	60	60	59	59	59	59	60	62	63	61	60	59	59
Sat	59	59	59	60	60	60	60	60	60	60	60	61	61	61	61	62	62	62	62	63	62	62	62	62
Sun	62	62	62	62	62	62	62	62	62	62	63	63	63	63	63	63	63	63	64	64	63	63	63	63
Mon	63	63	63	63	63	63	62	62	62	61	61	60	60	59	58	58	57	57	57	56	55	54	54	53
Tue	53	53	52	52	52	51	51	51	51	51	51	52	52	52	52	53	54	54	54	54	54	55	55	55

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
Ho Chi Minh City	73.5Moderate	101	19.9	168 / 168
Hanoi	68.6Moderate	91	18	168 / 168
Hai Phong	64.4Moderate	86	16.7	168 / 168
Can Tho	61.7Moderate	89	14.2	168 / 168
Da Nang	60Moderate	71	14.1	168 / 168
Hue	57.9Moderate	61	12.9	168 / 168
Nha Trang	53.9Moderate	56	10.9	168 / 168
Da Lat	35.9Good	48	6.3	168 / 168

City-hours by category

Good: 191

Moderate: 1152

Unhealthy for Sensitive Groups: 1

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	67	66	66	66	65	65	64	64	64	63	63	62	62	62	62	61	61	61	60	60	59	58	58	57
Thu	57	57	57	57	57	57	57	57	57	57	57	57	57	58	58	58	59	63	66	66	64	62	60	60
Fri	60	60	60	60	60	60	60	60	60	60	60	60	60	59	59	59	59	60	62	63	61	60	59	59
Sat	59	59	59	60	60	60	60	60	60	60	60	61	61	61	61	62	62	62	62	63	62	62	62	62
Sun	62	62	62	62	62	62	62	62	62	62	63	63	63	63	63	63	63	63	64	64	63	63	63	63
Mon	63	63	63	63	63	63	62	62	62	61	61	60	60	59	58	58	57	57	57	56	55	54	54	53
Tue	53	53	52	52	52	51	51	51	51	51	51	52	52	52	52	53	54	54	54	54	54	55	55	55

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	67	66	66	66	65	65	64	64	64	63	63	62	62	62	62	61	61	61	60	60	59	58	58	57
Thu	57	57	57	57	57	57	57	57	57	57	57	57	57	58	58	58	59	63	66	66	64	62	60	60
Fri	60	60	60	60	60	60	60	60	60	60	60	60	60	59	59	59	59	60	62	63	61	60	59	59
Sat	59	59	59	60	60	60	60	60	60	60	60	61	61	61	61	62	62	62	62	63	62	62	62	62
Sun	62	62	62	62	62	62	62	62	62	62	63	63	63	63	63	63	63	63	64	64	63	63	63	63
Mon	63	63	63	63	63	63	62	62	62	61	61	60	60	59	58	58	57	57	57	56	55	54	54	53
Tue	53	53	52	52	52	51	51	51	51	51	51	52	52	52	52	53	54	54	54	54	54	55	55	55

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	67	66	66	66	65	65	64	64	64	63	63	62	62	62	62	61	61	61	60	60	59	58	58	57
Thu	57	57	57	57	57	57	57	57	57	57	57	57	57	58	58	58	59	63	66	66	64	62	60	60
Fri	60	60	60	60	60	60	60	60	60	60	60	60	60	59	59	59	59	60	62	63	61	60	59	59
Sat	59	59	59	60	60	60	60	60	60	60	60	61	61	61	61	62	62	62	62	63	62	62	62	62
Sun	62	62	62	62	62	62	62	62	62	62	63	63	63	63	63	63	63	63	64	64	63	63	63	63
Mon	63	63	63	63	63	63	62	62	62	61	61	60	60	59	58	58	57	57	57	56	55	54	54	53
Tue	53	53	52	52	52	51	51	51	51	51	51	52	52	52	52	53	54	54	54	54	54	55	55	55