7 – 13 Feb 2024 · Vietnam · Wednesday to Tuesday, UTC+7

Vietnam weekly air quality

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

70.7Weekly mean modelled AQI · Moderate

Mean PM2.5: 19.9 µg/m³. Both means cover the selected cities hour by hour. They are not a national average or Vietnam’s official index.

+6.2 AQI compared with the previous week’s mean of 64.5.

Highest hourly estimate: 157 in Hanoi · 12 Feb, 13:00 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, 7 Feb	61.8Moderate	42–80	18	192 / 192
Thu, 8 Feb	65.7Moderate	56–82	16.1	192 / 192
Fri, 9 Feb	64.1Moderate	53–78	15.8	192 / 192
Sat, 10 Feb	65.6Moderate	35–125	21.6	192 / 192
Sun, 11 Feb	80.8Moderate	37–143	24.4	192 / 192
Mon, 12 Feb	84.2Moderate	37–157	24	192 / 192
Tue, 13 Feb	72.6Moderate	30–150	19.4	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	58	59	59	59	59	59	59	59	60	60	61	61	62	62	63	63	64	64	65	65	65	66	66	67
Thu	67	67	67	68	68	68	68	68	67	67	66	66	66	65	65	65	65	65	64	64	64	64	64	64
Fri	63	64	63	63	63	64	64	64	64	64	65	65	65	65	65	65	65	65	65	65	64	64	64	63
Sat	63	63	62	62	62	62	62	63	63	64	64	65	65	65	66	66	67	68	69	69	69	70	72	73
Sun	75	76	77	78	79	79	80	80	79	79	79	79	79	79	79	80	83	86	89	89	87	85	83	81
Mon	81	81	81	81	82	82	83	83	83	83	83	83	83	83	83	83	88	93	96	94	90	84	82	80
Tue	79	78	77	76	75	74	74	73	72	72	72	72	72	72	72	72	72	72	72	71	70	69	69	69

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	100.6Unhealthy for Sensitive Groups	157	35.7	168 / 168
Hai Phong	85.7Moderate	129	28.3	168 / 168
Hue	71.5Moderate	93	20.1	168 / 168
Da Nang	68.5Moderate	89	19.5	168 / 168
Ho Chi Minh City	67.8Moderate	102	17.8	168 / 168
Can Tho	66.2Moderate	118	15.8	168 / 168
Nha Trang	58.1Moderate	64	13.6	168 / 168
Da Lat	47.1Good	62	8.6	168 / 168

City-hours by category

Good: 104

Moderate: 1100

Unhealthy for Sensitive Groups: 121

Unhealthy: 19

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	58	59	59	59	59	59	59	59	60	60	61	61	62	62	63	63	64	64	65	65	65	66	66	67
Thu	67	67	67	68	68	68	68	68	67	67	66	66	66	65	65	65	65	65	64	64	64	64	64	64
Fri	63	64	63	63	63	64	64	64	64	64	65	65	65	65	65	65	65	65	65	65	64	64	64	63
Sat	63	63	62	62	62	62	62	63	63	64	64	65	65	65	66	66	67	68	69	69	69	70	72	73
Sun	75	76	77	78	79	79	80	80	79	79	79	79	79	79	79	80	83	86	89	89	87	85	83	81
Mon	81	81	81	81	82	82	83	83	83	83	83	83	83	83	83	83	88	93	96	94	90	84	82	80
Tue	79	78	77	76	75	74	74	73	72	72	72	72	72	72	72	72	72	72	72	71	70	69	69	69

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	58	59	59	59	59	59	59	59	60	60	61	61	62	62	63	63	64	64	65	65	65	66	66	67
Thu	67	67	67	68	68	68	68	68	67	67	66	66	66	65	65	65	65	65	64	64	64	64	64	64
Fri	63	64	63	63	63	64	64	64	64	64	65	65	65	65	65	65	65	65	65	65	64	64	64	63
Sat	63	63	62	62	62	62	62	63	63	64	64	65	65	65	66	66	67	68	69	69	69	70	72	73
Sun	75	76	77	78	79	79	80	80	79	79	79	79	79	79	79	80	83	86	89	89	87	85	83	81
Mon	81	81	81	81	82	82	83	83	83	83	83	83	83	83	83	83	88	93	96	94	90	84	82	80
Tue	79	78	77	76	75	74	74	73	72	72	72	72	72	72	72	72	72	72	72	71	70	69	69	69

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	58	59	59	59	59	59	59	59	60	60	61	61	62	62	63	63	64	64	65	65	65	66	66	67
Thu	67	67	67	68	68	68	68	68	67	67	66	66	66	65	65	65	65	65	64	64	64	64	64	64
Fri	63	64	63	63	63	64	64	64	64	64	65	65	65	65	65	65	65	65	65	65	64	64	64	63
Sat	63	63	62	62	62	62	62	63	63	64	64	65	65	65	66	66	67	68	69	69	69	70	72	73
Sun	75	76	77	78	79	79	80	80	79	79	79	79	79	79	79	80	83	86	89	89	87	85	83	81
Mon	81	81	81	81	82	82	83	83	83	83	83	83	83	83	83	83	88	93	96	94	90	84	82	80
Tue	79	78	77	76	75	74	74	73	72	72	72	72	72	72	72	72	72	72	72	71	70	69	69	69