12 – 18 Feb 2025 · Vietnam · Wednesday to Tuesday, UTC+7

Vietnam weekly air quality

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

75.4Weekly mean modelled AQI · Moderate

Mean PM2.5: 22.1 µg/m³. Both means cover the selected cities hour by hour. They are not a national average or Vietnam’s official index.

-8.1 AQI compared with the previous week’s mean of 83.5.

Highest hourly estimate: 158 in Hanoi · 13 Feb, 02:00 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, 12 Feb	76.2Moderate	17–158	25.4	192 / 192
Thu, 13 Feb	83Moderate	36–158	25	192 / 192
Fri, 14 Feb	83.1Moderate	33–155	25.8	192 / 192
Sat, 15 Feb	79.3Moderate	29–151	22.7	192 / 192
Sun, 16 Feb	68Moderate	30–118	15.2	192 / 192
Mon, 17 Feb	64.6Moderate	35–150	21.5	192 / 192
Tue, 18 Feb	73.4Moderate	30–151	19.2	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	78	78	77	77	76	74	74	73	73	72	73	73	73	73	74	74	77	80	82	82	81	80	78	78
Thu	80	81	83	83	84	84	84	84	84	83	83	83	83	83	83	83	83	83	83	83	83	83	83	82
Fri	81	80	79	79	79	80	81	82	82	82	83	83	83	83	83	84	84	86	89	90	89	86	84	83
Sat	82	81	81	80	80	79	79	79	78	78	78	78	78	78	78	80	82	83	84	82	80	76	75	75
Sun	75	75	74	74	73	73	72	71	70	69	68	67	67	66	66	65	65	64	64	64	64	63	63	62
Mon	61	61	60	61	60	60	61	61	62	62	63	63	64	65	65	66	66	67	68	69	70	71	72	74
Tue	74	75	75	75	76	75	75	75	75	74	74	74	73	73	73	73	74	76	76	74	70	68	68	68

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	125.1Unhealthy for Sensitive Groups	158	45.1	168 / 168
Can Tho	94.6Moderate	134	29.7	168 / 168
Ho Chi Minh City	91.3Moderate	158	28.3	168 / 168
Hai Phong	88.2Moderate	128	29.6	168 / 168
Da Nang	61.5Moderate	113	14.5	168 / 168
Hue	58.9Moderate	67	13.8	168 / 168
Nha Trang	43.6Good	55	8.6	168 / 168
Da Lat	39.7Good	56	7.4	168 / 168

City-hours by category

Good: 224

Moderate: 787

Unhealthy for Sensitive Groups: 284

Unhealthy: 49

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

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

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