1 – 7 Jul 2026 · Vietnam · Wednesday to Tuesday, UTC+7

Vietnam weekly air quality

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

77Weekly mean modelled AQI · Moderate

Mean PM2.5: 22.2 µg/m³. Both means cover the selected cities hour by hour. They are not a national average or Vietnam’s official index.

-18.3 AQI compared with the previous week’s mean of 95.3.

Highest hourly estimate: 205 in Hanoi · 7 Jul, 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, 1 Jul	83.1Moderate	30–205	20.3	192 / 192
Thu, 2 Jul	71.6Moderate	22–121	21.5	192 / 192
Fri, 3 Jul	71.9Moderate	16–156	19.4	192 / 192
Sat, 4 Jul	64.8Moderate	25–124	17.6	192 / 192
Sun, 5 Jul	73.6Moderate	24–142	24.7	192 / 192
Mon, 6 Jul	85.3Moderate	38–141	27.4	192 / 192
Tue, 7 Jul	88.9Moderate	51–205	24.7	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	80	78	78	77	76	75	75	73	72	72	74	76	80	88	95	100	103	104	101	93	85	79	76
Thu	74	73	71	70	69	69	68	68	68	69	69	69	69	70	71	73	75	77	79	78	75	72	71	71
Fri	72	72	73	73	73	73	72	72	71	71	71	71	71	71	71	72	72	72	73	73	73	73	72	70
Sat	69	67	66	66	66	65	65	64	64	64	64	64	64	65	65	65	65	65	64	64	64	64	64	64
Sun	64	65	66	66	67	68	69	70	71	72	72	73	73	73	74	76	80	82	84	83	82	80	79	79
Mon	80	80	81	81	81	82	82	83	83	83	83	84	84	84	85	85	88	93	96	96	92	88	87	87
Tue	87	87	87	86	86	86	86	86	85	84	84	84	84	87	86	90	95	100	101	100	97	93	89	85

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
Ho Chi Minh City	109.9Unhealthy for Sensitive Groups	142	38.9	168 / 168
Hanoi	100.7Unhealthy for Sensitive Groups	205	32.5	168 / 168
Can Tho	86.1Moderate	134	28.3	168 / 168
Nha Trang	83.9Moderate	176	24.4	168 / 168
Da Nang	72.6Moderate	205	14.1	168 / 168
Hue	72.1Moderate	103	19.9	168 / 168
Hai Phong	55.3Moderate	62	12.4	168 / 168
Da Lat	35.6Good	64	7.3	168 / 168

City-hours by category

Good: 141

Moderate: 967

Unhealthy for Sensitive Groups: 198

Unhealthy: 32

Very Unhealthy: 6

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	80	78	78	77	76	75	75	73	72	72	74	76	80	88	95	100	103	104	101	93	85	79	76
Thu	74	73	71	70	69	69	68	68	68	69	69	69	69	70	71	73	75	77	79	78	75	72	71	71
Fri	72	72	73	73	73	73	72	72	71	71	71	71	71	71	71	72	72	72	73	73	73	73	72	70
Sat	69	67	66	66	66	65	65	64	64	64	64	64	64	65	65	65	65	65	64	64	64	64	64	64
Sun	64	65	66	66	67	68	69	70	71	72	72	73	73	73	74	76	80	82	84	83	82	80	79	79
Mon	80	80	81	81	81	82	82	83	83	83	83	84	84	84	85	85	88	93	96	96	92	88	87	87
Tue	87	87	87	86	86	86	86	86	85	84	84	84	84	87	86	90	95	100	101	100	97	93	89	85

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	80	78	78	77	76	75	75	73	72	72	74	76	80	88	95	100	103	104	101	93	85	79	76
Thu	74	73	71	70	69	69	68	68	68	69	69	69	69	70	71	73	75	77	79	78	75	72	71	71
Fri	72	72	73	73	73	73	72	72	71	71	71	71	71	71	71	72	72	72	73	73	73	73	72	70
Sat	69	67	66	66	66	65	65	64	64	64	64	64	64	65	65	65	65	65	64	64	64	64	64	64
Sun	64	65	66	66	67	68	69	70	71	72	72	73	73	73	74	76	80	82	84	83	82	80	79	79
Mon	80	80	81	81	81	82	82	83	83	83	83	84	84	84	85	85	88	93	96	96	92	88	87	87
Tue	87	87	87	86	86	86	86	86	85	84	84	84	84	87	86	90	95	100	101	100	97	93	89	85

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	80	78	78	77	76	75	75	73	72	72	74	76	80	88	95	100	103	104	101	93	85	79	76
Thu	74	73	71	70	69	69	68	68	68	69	69	69	69	70	71	73	75	77	79	78	75	72	71	71
Fri	72	72	73	73	73	73	72	72	71	71	71	71	71	71	71	72	72	72	73	73	73	73	72	70
Sat	69	67	66	66	66	65	65	64	64	64	64	64	64	65	65	65	65	65	64	64	64	64	64	64
Sun	64	65	66	66	67	68	69	70	71	72	72	73	73	73	74	76	80	82	84	83	82	80	79	79
Mon	80	80	81	81	81	82	82	83	83	83	83	84	84	84	85	85	88	93	96	96	92	88	87	87
Tue	87	87	87	86	86	86	86	86	85	84	84	84	84	87	86	90	95	100	101	100	97	93	89	85