10 – 16 Jun 2026 · Vietnam · Wednesday to Tuesday, UTC+7

Vietnam weekly air quality

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

105.6Weekly mean modelled AQI · Unhealthy for Sensitive Groups

Mean PM2.5: 33.2 µg/m³. Both means cover the selected cities hour by hour. They are not a national average or Vietnam’s official index.

+13.5 AQI compared with the previous week’s mean of 92.1.

Highest hourly estimate: 228 in Da Nang · 16 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, 10 Jun	91.1Moderate	42–174	30.6	192 / 192
Thu, 11 Jun	105Unhealthy for Sensitive Groups	51–182	38	192 / 192
Fri, 12 Jun	115.5Unhealthy for Sensitive Groups	52–203	42.1	192 / 192
Sat, 13 Jun	117.3Unhealthy for Sensitive Groups	55–221	31.6	192 / 192
Sun, 14 Jun	104.5Unhealthy for Sensitive Groups	43–223	31	192 / 192
Mon, 15 Jun	104.6Unhealthy for Sensitive Groups	31–213	29.5	192 / 192
Tue, 16 Jun	101.7Unhealthy for Sensitive Groups	44–228	29.9	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	84	84	85	85	85	85	85	86	87	87	88	88	88	88	88	89	94	99	103	105	104	101	101	99
Thu	97	95	96	97	98	100	100	102	101	101	101	101	101	101	101	104	110	116	121	123	120	117	112	109
Fri	106	104	103	105	105	105	105	106	106	106	106	106	106	110	117	126	132	138	141	139	136	129	120	114
Sat	111	111	110	108	106	106	104	102	101	101	103	105	106	112	119	129	141	149	150	146	138	128	117	110
Sun	106	104	102	99	95	91	91	91	91	91	91	95	96	97	104	112	121	129	130	126	120	115	107	101
Mon	98	95	92	91	91	91	90	90	89	89	89	89	95	97	102	111	125	136	140	139	132	123	113	105
Tue	100	98	97	96	93	91	90	90	89	89	89	92	96	98	103	111	116	121	123	121	116	113	108	102

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	144.9Unhealthy for Sensitive Groups	158	53.9	168 / 168
Can Tho	136.2Unhealthy for Sensitive Groups	182	57.5	168 / 168
Hanoi	133.7Unhealthy for Sensitive Groups	203	55.6	168 / 168
Da Nang	117.8Unhealthy for Sensitive Groups	228	22.1	168 / 168
Nha Trang	99.7Moderate	174	24.2	168 / 168
Hai Phong	90.3Moderate	152	25.4	168 / 168
Hue	73.3Moderate	165	17.7	168 / 168
Da Lat	49.3Good	59	9.6	168 / 168

City-hours by category

Good: 82

Moderate: 609

Unhealthy for Sensitive Groups: 376

Unhealthy: 248

Very Unhealthy: 29

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	84	84	85	85	85	85	85	86	87	87	88	88	88	88	88	89	94	99	103	105	104	101	101	99
Thu	97	95	96	97	98	100	100	102	101	101	101	101	101	101	101	104	110	116	121	123	120	117	112	109
Fri	106	104	103	105	105	105	105	106	106	106	106	106	106	110	117	126	132	138	141	139	136	129	120	114
Sat	111	111	110	108	106	106	104	102	101	101	103	105	106	112	119	129	141	149	150	146	138	128	117	110
Sun	106	104	102	99	95	91	91	91	91	91	91	95	96	97	104	112	121	129	130	126	120	115	107	101
Mon	98	95	92	91	91	91	90	90	89	89	89	89	95	97	102	111	125	136	140	139	132	123	113	105
Tue	100	98	97	96	93	91	90	90	89	89	89	92	96	98	103	111	116	121	123	121	116	113	108	102

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	84	84	85	85	85	85	85	86	87	87	88	88	88	88	88	89	94	99	103	105	104	101	101	99
Thu	97	95	96	97	98	100	100	102	101	101	101	101	101	101	101	104	110	116	121	123	120	117	112	109
Fri	106	104	103	105	105	105	105	106	106	106	106	106	106	110	117	126	132	138	141	139	136	129	120	114
Sat	111	111	110	108	106	106	104	102	101	101	103	105	106	112	119	129	141	149	150	146	138	128	117	110
Sun	106	104	102	99	95	91	91	91	91	91	91	95	96	97	104	112	121	129	130	126	120	115	107	101
Mon	98	95	92	91	91	91	90	90	89	89	89	89	95	97	102	111	125	136	140	139	132	123	113	105
Tue	100	98	97	96	93	91	90	90	89	89	89	92	96	98	103	111	116	121	123	121	116	113	108	102

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	84	84	85	85	85	85	85	86	87	87	88	88	88	88	88	89	94	99	103	105	104	101	101	99
Thu	97	95	96	97	98	100	100	102	101	101	101	101	101	101	101	104	110	116	121	123	120	117	112	109
Fri	106	104	103	105	105	105	105	106	106	106	106	106	106	110	117	126	132	138	141	139	136	129	120	114
Sat	111	111	110	108	106	106	104	102	101	101	103	105	106	112	119	129	141	149	150	146	138	128	117	110
Sun	106	104	102	99	95	91	91	91	91	91	91	95	96	97	104	112	121	129	130	126	120	115	107	101
Mon	98	95	92	91	91	91	90	90	89	89	89	89	95	97	102	111	125	136	140	139	132	123	113	105
Tue	100	98	97	96	93	91	90	90	89	89	89	92	96	98	103	111	116	121	123	121	116	113	108	102