4 – 10 Jun 2025 · Vietnam · Wednesday to Tuesday, UTC+7

Vietnam weekly air quality

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

101.5Weekly mean modelled AQI · Unhealthy for Sensitive Groups

Mean PM2.5: 29.6 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 97.3.

Highest hourly estimate: 248 in Da Nang · 6 Jun, 17:00 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, 4 Jun	103.3Unhealthy for Sensitive Groups	36–226	32.4	192 / 192
Thu, 5 Jun	111.6Unhealthy for Sensitive Groups	49–220	32.9	192 / 192
Fri, 6 Jun	102.1Unhealthy for Sensitive Groups	54–248	28.2	192 / 192
Sat, 7 Jun	104.7Unhealthy for Sensitive Groups	54–242	28.9	192 / 192
Sun, 8 Jun	97.9Moderate	56–241	27.8	192 / 192
Mon, 9 Jun	97.7Moderate	45–205	28.5	192 / 192
Tue, 10 Jun	92.8Moderate	36–200	28.8	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	92	85	82	82	83	84	85	86	87	88	89	94	96	97	104	111	124	135	140	140	136	129	119	108
Thu	103	100	98	99	100	100	101	102	101	101	104	106	109	113	115	119	126	133	137	136	131	124	114	108
Fri	103	99	96	95	93	91	89	87	86	86	89	92	95	100	103	109	116	123	126	126	123	117	108	102
Sat	100	99	98	96	93	91	90	91	90	90	90	94	96	100	104	113	123	130	133	132	127	120	112	105
Sun	102	99	97	94	90	86	86	85	84	84	84	86	90	92	97	103	110	116	119	118	114	109	105	103
Mon	101	97	92	88	88	88	89	89	89	90	90	90	90	89	93	97	103	111	116	117	115	112	108	105
Tue	105	104	101	98	95	91	89	88	89	89	89	90	90	90	90	90	92	94	96	95	94	92	89	88

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	142.9Unhealthy for Sensitive Groups	205	53.1	168 / 168
Da Nang	141.7Unhealthy for Sensitive Groups	248	25.6	168 / 168
Ho Chi Minh City	136.6Unhealthy for Sensitive Groups	157	51.7	168 / 168
Can Tho	93.3Moderate	108	31.4	168 / 168
Nha Trang	82.5Moderate	156	21.4	168 / 168
Hai Phong	81.8Moderate	163	23.8	168 / 168
Hue	80Moderate	167	19.4	168 / 168
Da Lat	52.8Moderate	62	10.8	168 / 168

City-hours by category

Good: 56

Moderate: 739

Unhealthy for Sensitive Groups: 349

Unhealthy: 147

Very Unhealthy: 53

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	92	85	82	82	83	84	85	86	87	88	89	94	96	97	104	111	124	135	140	140	136	129	119	108
Thu	103	100	98	99	100	100	101	102	101	101	104	106	109	113	115	119	126	133	137	136	131	124	114	108
Fri	103	99	96	95	93	91	89	87	86	86	89	92	95	100	103	109	116	123	126	126	123	117	108	102
Sat	100	99	98	96	93	91	90	91	90	90	90	94	96	100	104	113	123	130	133	132	127	120	112	105
Sun	102	99	97	94	90	86	86	85	84	84	84	86	90	92	97	103	110	116	119	118	114	109	105	103
Mon	101	97	92	88	88	88	89	89	89	90	90	90	90	89	93	97	103	111	116	117	115	112	108	105
Tue	105	104	101	98	95	91	89	88	89	89	89	90	90	90	90	90	92	94	96	95	94	92	89	88

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	92	85	82	82	83	84	85	86	87	88	89	94	96	97	104	111	124	135	140	140	136	129	119	108
Thu	103	100	98	99	100	100	101	102	101	101	104	106	109	113	115	119	126	133	137	136	131	124	114	108
Fri	103	99	96	95	93	91	89	87	86	86	89	92	95	100	103	109	116	123	126	126	123	117	108	102
Sat	100	99	98	96	93	91	90	91	90	90	90	94	96	100	104	113	123	130	133	132	127	120	112	105
Sun	102	99	97	94	90	86	86	85	84	84	84	86	90	92	97	103	110	116	119	118	114	109	105	103
Mon	101	97	92	88	88	88	89	89	89	90	90	90	90	89	93	97	103	111	116	117	115	112	108	105
Tue	105	104	101	98	95	91	89	88	89	89	89	90	90	90	90	90	92	94	96	95	94	92	89	88

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	92	85	82	82	83	84	85	86	87	88	89	94	96	97	104	111	124	135	140	140	136	129	119	108
Thu	103	100	98	99	100	100	101	102	101	101	104	106	109	113	115	119	126	133	137	136	131	124	114	108
Fri	103	99	96	95	93	91	89	87	86	86	89	92	95	100	103	109	116	123	126	126	123	117	108	102
Sat	100	99	98	96	93	91	90	91	90	90	90	94	96	100	104	113	123	130	133	132	127	120	112	105
Sun	102	99	97	94	90	86	86	85	84	84	84	86	90	92	97	103	110	116	119	118	114	109	105	103
Mon	101	97	92	88	88	88	89	89	89	90	90	90	90	89	93	97	103	111	116	117	115	112	108	105
Tue	105	104	101	98	95	91	89	88	89	89	89	90	90	90	90	90	92	94	96	95	94	92	89	88