16 – 22 Oct 2024 · Vietnam · Wednesday to Tuesday, UTC+7

Vietnam weekly air quality

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

59.8Weekly mean modelled AQI · Moderate

Mean PM2.5: 16.1 µg/m³. Both means cover the selected cities hour by hour. They are not a national average or Vietnam’s official index.

-14.6 AQI compared with the previous week’s mean of 74.4.

Highest hourly estimate: 168 in Hanoi · 22 Oct, 10:00 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, 16 Oct	55.9Moderate	24–113	14.3	192 / 192
Thu, 17 Oct	58.8Moderate	21–146	15.5	192 / 192
Fri, 18 Oct	55.9Moderate	26–122	12.1	192 / 192
Sat, 19 Oct	51.7Moderate	31–84	12.3	192 / 192
Sun, 20 Oct	58.4Moderate	33–133	16.1	192 / 192
Mon, 21 Oct	66.7Moderate	28–156	21.1	192 / 192
Tue, 22 Oct	71.4Moderate	14–168	21.6	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	60	60	59	58	57	57	56	55	55	55	55	55	55	55	55	55	55	56	56	56	55	54	55	55
Thu	55	56	56	56	57	57	58	58	59	59	59	59	59	59	60	60	61	62	62	61	60	59	59	59
Fri	59	58	58	58	57	57	57	57	56	56	55	55	55	55	55	55	55	55	56	55	55	55	54	54
Sat	53	53	52	52	52	52	52	51	51	52	52	52	52	51	51	51	51	51	51	51	51	51	52	52
Sun	53	54	54	54	54	55	55	55	55	56	56	56	57	57	57	57	59	62	64	66	67	68	67	66
Mon	65	64	62	63	64	64	65	65	65	65	65	65	66	65	65	66	68	69	71	72	72	72	72	71
Tue	70	69	70	70	70	70	70	71	71	71	71	70	71	71	70	71	71	73	74	75	75	75	73	71

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	114.1Unhealthy for Sensitive Groups	168	43.8	168 / 168
Ho Chi Minh City	74.9Moderate	113	21.5	168 / 168
Hai Phong	70.3Moderate	133	18	168 / 168
Can Tho	62.2Moderate	84	15.4	168 / 168
Hue	48.3Good	57	9.6	168 / 168
Da Nang	47.8Good	66	10.2	168 / 168
Nha Trang	31.8Good	42	5.7	168 / 168
Da Lat	29.1Good	37	5	168 / 168

City-hours by category

Good: 544

Moderate: 688

Unhealthy for Sensitive Groups: 84

Unhealthy: 28

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	60	60	59	58	57	57	56	55	55	55	55	55	55	55	55	55	55	56	56	56	55	54	55	55
Thu	55	56	56	56	57	57	58	58	59	59	59	59	59	59	60	60	61	62	62	61	60	59	59	59
Fri	59	58	58	58	57	57	57	57	56	56	55	55	55	55	55	55	55	55	56	55	55	55	54	54
Sat	53	53	52	52	52	52	52	51	51	52	52	52	52	51	51	51	51	51	51	51	51	51	52	52
Sun	53	54	54	54	54	55	55	55	55	56	56	56	57	57	57	57	59	62	64	66	67	68	67	66
Mon	65	64	62	63	64	64	65	65	65	65	65	65	66	65	65	66	68	69	71	72	72	72	72	71
Tue	70	69	70	70	70	70	70	71	71	71	71	70	71	71	70	71	71	73	74	75	75	75	73	71

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	60	60	59	58	57	57	56	55	55	55	55	55	55	55	55	55	55	56	56	56	55	54	55	55
Thu	55	56	56	56	57	57	58	58	59	59	59	59	59	59	60	60	61	62	62	61	60	59	59	59
Fri	59	58	58	58	57	57	57	57	56	56	55	55	55	55	55	55	55	55	56	55	55	55	54	54
Sat	53	53	52	52	52	52	52	51	51	52	52	52	52	51	51	51	51	51	51	51	51	51	52	52
Sun	53	54	54	54	54	55	55	55	55	56	56	56	57	57	57	57	59	62	64	66	67	68	67	66
Mon	65	64	62	63	64	64	65	65	65	65	65	65	66	65	65	66	68	69	71	72	72	72	72	71
Tue	70	69	70	70	70	70	70	71	71	71	71	70	71	71	70	71	71	73	74	75	75	75	73	71

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	60	60	59	58	57	57	56	55	55	55	55	55	55	55	55	55	55	56	56	56	55	54	55	55
Thu	55	56	56	56	57	57	58	58	59	59	59	59	59	59	60	60	61	62	62	61	60	59	59	59
Fri	59	58	58	58	57	57	57	57	56	56	55	55	55	55	55	55	55	55	56	55	55	55	54	54
Sat	53	53	52	52	52	52	52	51	51	52	52	52	52	51	51	51	51	51	51	51	51	51	52	52
Sun	53	54	54	54	54	55	55	55	55	56	56	56	57	57	57	57	59	62	64	66	67	68	67	66
Mon	65	64	62	63	64	64	65	65	65	65	65	65	66	65	65	66	68	69	71	72	72	72	72	71
Tue	70	69	70	70	70	70	70	71	71	71	71	70	71	71	70	71	71	73	74	75	75	75	73	71