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

Vietnam weekly air quality

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

77.2Weekly mean modelled AQI · Moderate

Mean PM2.5: 22.5 µg/m³. Both means cover the selected cities hour by hour. They are not a national average or Vietnam’s official index.

+5.8 AQI compared with the previous week’s mean of 71.4.

Highest hourly estimate: 151 in Hanoi · 17 Nov, 18:00 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 Nov	76.9Moderate	54–111	23.1	192 / 192
Thu, 13 Nov	81Moderate	48–121	26.3	192 / 192
Fri, 14 Nov	86.6Moderate	42–150	26.5	192 / 192
Sat, 15 Nov	84.1Moderate	51–150	25	192 / 192
Sun, 16 Nov	78.1Moderate	19–142	21.4	192 / 192
Mon, 17 Nov	67.3Moderate	13–151	20.3	192 / 192
Tue, 18 Nov	66.2Moderate	19–135	15.1	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	79	78	78	78	78	78	78	78	77	77	77	77	77	76	77	76	76	76	76	76	76	76	76	77
Thu	77	78	78	78	79	79	79	79	80	80	80	81	81	81	82	82	83	83	84	85	85	84	84	84
Fri	84	84	84	84	85	86	86	87	88	89	89	89	89	89	88	88	87	88	89	87	86	86	85	85
Sat	85	85	85	85	84	84	84	83	83	83	83	83	83	83	83	83	84	87	88	87	85	83	82	82
Sun	82	82	82	81	81	81	81	81	80	80	80	79	79	78	78	77	76	76	76	75	74	73	73	72
Mon	70	69	68	67	66	66	65	65	65	64	65	65	65	66	66	67	68	69	71	70	70	71	70	70
Tue	70	69	69	68	68	68	67	67	67	67	67	67	67	67	68	68	67	67	66	65	63	61	59	59

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	126.4Unhealthy for Sensitive Groups	151	43.4	168 / 168
Ho Chi Minh City	97.4Moderate	130	32.9	168 / 168
Can Tho	90.9Moderate	124	29.5	168 / 168
Hai Phong	85.2Moderate	116	26.3	168 / 168
Hue	63.4Moderate	79	15.8	168 / 168
Da Nang	62.4Moderate	80	15.1	168 / 168
Nha Trang	51.3Moderate	78	10.3	168 / 168
Da Lat	40.4Good	58	6.8	168 / 168

City-hours by category

Good: 193

Moderate: 855

Unhealthy for Sensitive Groups: 294

Unhealthy: 2

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

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

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