26 Nov – 2 Dec 2025 · Vietnam · Wednesday to Tuesday, UTC+7

Vietnam weekly air quality

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

83.9Weekly mean modelled AQI · Moderate

Mean PM2.5: 26.8 µg/m³. Both means cover the selected cities hour by hour. They are not a national average or Vietnam’s official index.

+16.8 AQI compared with the previous week’s mean of 67.1.

Highest hourly estimate: 197 in Ho Chi Minh City · 1 Dec, 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, 26 Nov	79.5Moderate	53–109	23.4	192 / 192
Thu, 27 Nov	78.1Moderate	53–114	21.6	192 / 192
Fri, 28 Nov	75.6Moderate	53–138	22.9	192 / 192
Sat, 29 Nov	79.4Moderate	28–169	27	192 / 192
Sun, 30 Nov	91.4Moderate	31–191	33.7	192 / 192
Mon, 1 Dec	97.7Moderate	50–197	29.4	192 / 192
Tue, 2 Dec	85.7Moderate	43–167	29.7	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	82	81	80	78	78	77	78	78	78	79	79	79	79	79	80	80	80	81	81	80	80	81	80	80
Thu	79	79	79	78	78	77	77	76	76	76	76	76	76	77	77	78	79	80	81	81	81	81	80	79
Fri	78	78	77	76	75	74	74	74	74	74	74	75	74	74	74	74	74	75	76	77	77	78	78	79
Sat	79	80	79	79	79	79	78	78	78	78	78	78	78	78	79	80	81	84	86	83	79	78	78	79
Sun	80	81	82	82	84	84	86	87	88	89	90	90	91	91	91	94	100	105	108	106	101	97	96	96
Mon	96	96	96	96	96	96	96	96	96	95	95	95	95	94	94	95	100	107	110	109	105	99	95	93
Tue	90	88	87	86	85	84	83	82	83	83	83	82	82	83	83	83	86	89	90	89	89	89	89	89

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	138.3Unhealthy for Sensitive Groups	171	63	168 / 168
Ho Chi Minh City	101.9Unhealthy for Sensitive Groups	197	34.9	168 / 168
Hai Phong	84.2Moderate	104	27.6	168 / 168
Can Tho	79.9Moderate	124	24.3	168 / 168
Da Nang	76.2Moderate	111	18.7	168 / 168
Hue	73.6Moderate	98	20.2	168 / 168
Nha Trang	66.2Moderate	118	15.4	168 / 168
Da Lat	50.9Moderate	59	10.3	168 / 168

City-hours by category

Good: 63

Moderate: 1042

Unhealthy for Sensitive Groups: 121

Unhealthy: 118

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	82	81	80	78	78	77	78	78	78	79	79	79	79	79	80	80	80	81	81	80	80	81	80	80
Thu	79	79	79	78	78	77	77	76	76	76	76	76	76	77	77	78	79	80	81	81	81	81	80	79
Fri	78	78	77	76	75	74	74	74	74	74	74	75	74	74	74	74	74	75	76	77	77	78	78	79
Sat	79	80	79	79	79	79	78	78	78	78	78	78	78	78	79	80	81	84	86	83	79	78	78	79
Sun	80	81	82	82	84	84	86	87	88	89	90	90	91	91	91	94	100	105	108	106	101	97	96	96
Mon	96	96	96	96	96	96	96	96	96	95	95	95	95	94	94	95	100	107	110	109	105	99	95	93
Tue	90	88	87	86	85	84	83	82	83	83	83	82	82	83	83	83	86	89	90	89	89	89	89	89

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	82	81	80	78	78	77	78	78	78	79	79	79	79	79	80	80	80	81	81	80	80	81	80	80
Thu	79	79	79	78	78	77	77	76	76	76	76	76	76	77	77	78	79	80	81	81	81	81	80	79
Fri	78	78	77	76	75	74	74	74	74	74	74	75	74	74	74	74	74	75	76	77	77	78	78	79
Sat	79	80	79	79	79	79	78	78	78	78	78	78	78	78	79	80	81	84	86	83	79	78	78	79
Sun	80	81	82	82	84	84	86	87	88	89	90	90	91	91	91	94	100	105	108	106	101	97	96	96
Mon	96	96	96	96	96	96	96	96	96	95	95	95	95	94	94	95	100	107	110	109	105	99	95	93
Tue	90	88	87	86	85	84	83	82	83	83	83	82	82	83	83	83	86	89	90	89	89	89	89	89

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	82	81	80	78	78	77	78	78	78	79	79	79	79	79	80	80	80	81	81	80	80	81	80	80
Thu	79	79	79	78	78	77	77	76	76	76	76	76	76	77	77	78	79	80	81	81	81	81	80	79
Fri	78	78	77	76	75	74	74	74	74	74	74	75	74	74	74	74	74	75	76	77	77	78	78	79
Sat	79	80	79	79	79	79	78	78	78	78	78	78	78	78	79	80	81	84	86	83	79	78	78	79
Sun	80	81	82	82	84	84	86	87	88	89	90	90	91	91	91	94	100	105	108	106	101	97	96	96
Mon	96	96	96	96	96	96	96	96	96	95	95	95	95	94	94	95	100	107	110	109	105	99	95	93
Tue	90	88	87	86	85	84	83	82	83	83	83	82	82	83	83	83	86	89	90	89	89	89	89	89