18 – 24 Jun 2025 · Vietnam · Wednesday to Tuesday, UTC+7

Vietnam weekly air quality

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

99.6Weekly mean modelled AQI · Moderate

Mean PM2.5: 27.6 µg/m³. Both means cover the selected cities hour by hour. They are not a national average or Vietnam’s official index.

+3.9 AQI compared with the previous week’s mean of 95.7.

Highest hourly estimate: 244 in Da Nang · 24 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, 18 Jun	101.7Unhealthy for Sensitive Groups	55–222	32.4	192 / 192
Thu, 19 Jun	108.9Unhealthy for Sensitive Groups	59–234	31.6	192 / 192
Fri, 20 Jun	105.7Unhealthy for Sensitive Groups	60–225	28.7	192 / 192
Sat, 21 Jun	98.2Moderate	54–215	26.5	192 / 192
Sun, 22 Jun	94.2Moderate	52–212	24.2	192 / 192
Mon, 23 Jun	93.7Moderate	39–239	26.3	192 / 192
Tue, 24 Jun	94.7Moderate	41–244	23.4	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	102	98	94	92	91	91	91	92	92	92	93	93	98	100	104	108	112	117	118	116	114	113	113	112
Thu	109	107	105	103	99	97	96	95	94	94	94	96	99	100	105	114	125	133	136	134	130	125	116	108
Fri	105	104	102	99	98	95	93	92	92	91	91	93	96	100	105	113	120	125	129	129	125	120	114	107
Sat	102	99	96	92	89	86	85	84	84	84	84	84	88	94	101	108	115	120	121	119	115	110	103	96
Sun	93	90	88	86	84	84	84	83	82	82	82	81	85	89	92	99	107	116	121	121	117	109	98	89
Mon	87	85	83	81	80	80	81	82	82	83	83	87	89	92	97	100	107	114	118	118	114	108	102	100
Tue	99	97	94	91	88	85	82	80	79	79	81	83	87	91	94	100	108	113	114	114	111	107	101	97

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
Da Nang	153.5Unhealthy	244	26	168 / 168
Ho Chi Minh City	123.4Unhealthy for Sensitive Groups	160	46.8	168 / 168
Hanoi	123.1Unhealthy for Sensitive Groups	179	41.8	168 / 168
Can Tho	108Unhealthy for Sensitive Groups	165	37	168 / 168
Hue	85.5Moderate	159	19.9	168 / 168
Nha Trang	82.9Moderate	139	21	168 / 168
Hai Phong	64.3Moderate	93	15.4	168 / 168
Da Lat	56.1Moderate	70	12.5	168 / 168

City-hours by category

Good: 46

Moderate: 744

Unhealthy for Sensitive Groups: 373

Unhealthy: 124

Very Unhealthy: 57

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	102	98	94	92	91	91	91	92	92	92	93	93	98	100	104	108	112	117	118	116	114	113	113	112
Thu	109	107	105	103	99	97	96	95	94	94	94	96	99	100	105	114	125	133	136	134	130	125	116	108
Fri	105	104	102	99	98	95	93	92	92	91	91	93	96	100	105	113	120	125	129	129	125	120	114	107
Sat	102	99	96	92	89	86	85	84	84	84	84	84	88	94	101	108	115	120	121	119	115	110	103	96
Sun	93	90	88	86	84	84	84	83	82	82	82	81	85	89	92	99	107	116	121	121	117	109	98	89
Mon	87	85	83	81	80	80	81	82	82	83	83	87	89	92	97	100	107	114	118	118	114	108	102	100
Tue	99	97	94	91	88	85	82	80	79	79	81	83	87	91	94	100	108	113	114	114	111	107	101	97

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	102	98	94	92	91	91	91	92	92	92	93	93	98	100	104	108	112	117	118	116	114	113	113	112
Thu	109	107	105	103	99	97	96	95	94	94	94	96	99	100	105	114	125	133	136	134	130	125	116	108
Fri	105	104	102	99	98	95	93	92	92	91	91	93	96	100	105	113	120	125	129	129	125	120	114	107
Sat	102	99	96	92	89	86	85	84	84	84	84	84	88	94	101	108	115	120	121	119	115	110	103	96
Sun	93	90	88	86	84	84	84	83	82	82	82	81	85	89	92	99	107	116	121	121	117	109	98	89
Mon	87	85	83	81	80	80	81	82	82	83	83	87	89	92	97	100	107	114	118	118	114	108	102	100
Tue	99	97	94	91	88	85	82	80	79	79	81	83	87	91	94	100	108	113	114	114	111	107	101	97

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	102	98	94	92	91	91	91	92	92	92	93	93	98	100	104	108	112	117	118	116	114	113	113	112
Thu	109	107	105	103	99	97	96	95	94	94	94	96	99	100	105	114	125	133	136	134	130	125	116	108
Fri	105	104	102	99	98	95	93	92	92	91	91	93	96	100	105	113	120	125	129	129	125	120	114	107
Sat	102	99	96	92	89	86	85	84	84	84	84	84	88	94	101	108	115	120	121	119	115	110	103	96
Sun	93	90	88	86	84	84	84	83	82	82	82	81	85	89	92	99	107	116	121	121	117	109	98	89
Mon	87	85	83	81	80	80	81	82	82	83	83	87	89	92	97	100	107	114	118	118	114	108	102	100
Tue	99	97	94	91	88	85	82	80	79	79	81	83	87	91	94	100	108	113	114	114	111	107	101	97