3 – 9 Jun 2026 · Vietnam · Wednesday to Tuesday, UTC+7

Vietnam weekly air quality

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

92.1Weekly mean modelled AQI · Moderate

Mean PM2.5: 26 µg/m³. Both means cover the selected cities hour by hour. They are not a national average or Vietnam’s official index.

-4.2 AQI compared with the previous week’s mean of 96.3.

Highest hourly estimate: 234 in Da Nang · 4 Jun, 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, 3 Jun	88.3Moderate	22–198	24	192 / 192
Thu, 4 Jun	94.7Moderate	33–234	22.9	192 / 192
Fri, 5 Jun	95.1Moderate	40–227	28.4	192 / 192
Sat, 6 Jun	104.1Unhealthy for Sensitive Groups	53–208	29.9	192 / 192
Sun, 7 Jun	98.8Moderate	57–187	26.5	192 / 192
Mon, 8 Jun	84.4Moderate	55–139	23.5	192 / 192
Tue, 9 Jun	79.5Moderate	42–141	26.6	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	79	79	79	79	78	77	76	76	77	77	77	77	79	84	93	105	113	116	116	112	106	99	88
Thu	83	82	81	80	78	77	77	77	76	76	76	80	84	89	98	111	122	129	132	131	125	115	104	92
Fri	85	82	79	78	78	79	79	80	80	80	81	81	85	86	89	101	113	122	127	127	126	121	115	109
Sat	102	95	92	90	91	92	93	94	94	94	94	94	97	99	101	108	122	131	134	133	128	119	107	96
Sun	92	91	91	90	89	89	89	89	89	89	89	89	89	89	95	103	114	124	128	127	120	111	102	94
Mon	88	84	83	83	82	82	81	80	80	79	79	79	79	79	82	84	91	97	99	97	91	87	82	78
Tue	78	77	78	78	78	78	77	78	77	77	77	78	78	78	78	78	81	85	87	86	84	81	81	83

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	116.3Unhealthy for Sensitive Groups	209	36.1	168 / 168
Ho Chi Minh City	108.8Unhealthy for Sensitive Groups	159	39.3	168 / 168
Da Nang	105.6Unhealthy for Sensitive Groups	234	18.4	168 / 168
Can Tho	100.4Unhealthy for Sensitive Groups	147	34.8	168 / 168
Hai Phong	88.1Moderate	227	21.8	168 / 168
Hue	87.6Moderate	190	22.2	168 / 168
Nha Trang	82.5Moderate	139	25	168 / 168
Da Lat	47.7Good	63	10.2	168 / 168

City-hours by category

Good: 91

Moderate: 835

Unhealthy for Sensitive Groups: 320

Unhealthy: 67

Very Unhealthy: 31

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	79	79	79	79	78	77	76	76	77	77	77	77	79	84	93	105	113	116	116	112	106	99	88
Thu	83	82	81	80	78	77	77	77	76	76	76	80	84	89	98	111	122	129	132	131	125	115	104	92
Fri	85	82	79	78	78	79	79	80	80	80	81	81	85	86	89	101	113	122	127	127	126	121	115	109
Sat	102	95	92	90	91	92	93	94	94	94	94	94	97	99	101	108	122	131	134	133	128	119	107	96
Sun	92	91	91	90	89	89	89	89	89	89	89	89	89	89	95	103	114	124	128	127	120	111	102	94
Mon	88	84	83	83	82	82	81	80	80	79	79	79	79	79	82	84	91	97	99	97	91	87	82	78
Tue	78	77	78	78	78	78	77	78	77	77	77	78	78	78	78	78	81	85	87	86	84	81	81	83

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	79	79	79	79	78	77	76	76	77	77	77	77	79	84	93	105	113	116	116	112	106	99	88
Thu	83	82	81	80	78	77	77	77	76	76	76	80	84	89	98	111	122	129	132	131	125	115	104	92
Fri	85	82	79	78	78	79	79	80	80	80	81	81	85	86	89	101	113	122	127	127	126	121	115	109
Sat	102	95	92	90	91	92	93	94	94	94	94	94	97	99	101	108	122	131	134	133	128	119	107	96
Sun	92	91	91	90	89	89	89	89	89	89	89	89	89	89	95	103	114	124	128	127	120	111	102	94
Mon	88	84	83	83	82	82	81	80	80	79	79	79	79	79	82	84	91	97	99	97	91	87	82	78
Tue	78	77	78	78	78	78	77	78	77	77	77	78	78	78	78	78	81	85	87	86	84	81	81	83

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	79	79	79	79	78	77	76	76	77	77	77	77	79	84	93	105	113	116	116	112	106	99	88
Thu	83	82	81	80	78	77	77	77	76	76	76	80	84	89	98	111	122	129	132	131	125	115	104	92
Fri	85	82	79	78	78	79	79	80	80	80	81	81	85	86	89	101	113	122	127	127	126	121	115	109
Sat	102	95	92	90	91	92	93	94	94	94	94	94	97	99	101	108	122	131	134	133	128	119	107	96
Sun	92	91	91	90	89	89	89	89	89	89	89	89	89	89	95	103	114	124	128	127	120	111	102	94
Mon	88	84	83	83	82	82	81	80	80	79	79	79	79	79	82	84	91	97	99	97	91	87	82	78
Tue	78	77	78	78	78	78	77	78	77	77	77	78	78	78	78	78	81	85	87	86	84	81	81	83