25 Jun – 1 Jul 2025 · Vietnam · Wednesday to Tuesday, UTC+7

Vietnam weekly air quality

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

96.3Weekly mean modelled AQI · Moderate

Mean PM2.5: 27.2 µg/m³. Both means cover the selected cities hour by hour. They are not a national average or Vietnam’s official index.

-3.3 AQI compared with the previous week’s mean of 99.6.

Highest hourly estimate: 234 in Da Nang · 25 Jun, 16:00 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, 25 Jun	102Unhealthy for Sensitive Groups	46–234	28.3	192 / 192
Thu, 26 Jun	102.9Unhealthy for Sensitive Groups	47–227	31.6	192 / 192
Fri, 27 Jun	102.4Unhealthy for Sensitive Groups	31–219	29.4	192 / 192
Sat, 28 Jun	96.4Moderate	48–214	27.7	192 / 192
Sun, 29 Jun	94.9Moderate	42–228	26	192 / 192
Mon, 30 Jun	89.5Moderate	46–215	23.4	192 / 192
Tue, 1 Jul	86.2Moderate	51–198	24.1	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	94	94	94	95	94	94	94	94	93	94	95	97	101	103	104	110	117	121	123	121	116	109	100	93
Thu	90	88	88	88	88	89	89	89	91	91	91	96	98	102	106	112	119	125	129	129	127	121	114	109
Fri	108	106	104	103	99	95	92	92	91	90	90	90	94	97	101	106	110	113	117	117	116	113	108	103
Sat	100	96	93	91	90	90	89	89	88	88	88	88	88	92	95	101	107	109	109	108	107	106	102	100
Sun	97	93	89	87	86	85	85	84	85	85	85	85	90	92	95	100	106	111	113	112	109	105	102	98
Mon	95	90	86	82	82	81	81	81	82	82	82	81	85	86	89	94	99	104	107	106	102	97	92	87
Tue	83	79	79	79	79	80	80	80	80	80	80	80	80	82	87	91	94	99	102	101	98	96	92	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
Da Nang	142.3Unhealthy for Sensitive Groups	234	22.1	168 / 168
Ho Chi Minh City	133.1Unhealthy for Sensitive Groups	157	50	168 / 168
Hanoi	122.7Unhealthy for Sensitive Groups	159	44	168 / 168
Can Tho	95.5Moderate	117	32	168 / 168
Hue	80.9Moderate	150	22.2	168 / 168
Nha Trang	79.6Moderate	134	19.4	168 / 168
Hai Phong	68Moderate	90	18.6	168 / 168
Da Lat	48.5Good	56	9.3	168 / 168

City-hours by category

Good: 96

Moderate: 705

Unhealthy for Sensitive Groups: 412

Unhealthy: 89

Very Unhealthy: 42

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	94	94	94	95	94	94	94	94	93	94	95	97	101	103	104	110	117	121	123	121	116	109	100	93
Thu	90	88	88	88	88	89	89	89	91	91	91	96	98	102	106	112	119	125	129	129	127	121	114	109
Fri	108	106	104	103	99	95	92	92	91	90	90	90	94	97	101	106	110	113	117	117	116	113	108	103
Sat	100	96	93	91	90	90	89	89	88	88	88	88	88	92	95	101	107	109	109	108	107	106	102	100
Sun	97	93	89	87	86	85	85	84	85	85	85	85	90	92	95	100	106	111	113	112	109	105	102	98
Mon	95	90	86	82	82	81	81	81	82	82	82	81	85	86	89	94	99	104	107	106	102	97	92	87
Tue	83	79	79	79	79	80	80	80	80	80	80	80	80	82	87	91	94	99	102	101	98	96	92	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	94	94	94	95	94	94	94	94	93	94	95	97	101	103	104	110	117	121	123	121	116	109	100	93
Thu	90	88	88	88	88	89	89	89	91	91	91	96	98	102	106	112	119	125	129	129	127	121	114	109
Fri	108	106	104	103	99	95	92	92	91	90	90	90	94	97	101	106	110	113	117	117	116	113	108	103
Sat	100	96	93	91	90	90	89	89	88	88	88	88	88	92	95	101	107	109	109	108	107	106	102	100
Sun	97	93	89	87	86	85	85	84	85	85	85	85	90	92	95	100	106	111	113	112	109	105	102	98
Mon	95	90	86	82	82	81	81	81	82	82	82	81	85	86	89	94	99	104	107	106	102	97	92	87
Tue	83	79	79	79	79	80	80	80	80	80	80	80	80	82	87	91	94	99	102	101	98	96	92	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	94	94	94	95	94	94	94	94	93	94	95	97	101	103	104	110	117	121	123	121	116	109	100	93
Thu	90	88	88	88	88	89	89	89	91	91	91	96	98	102	106	112	119	125	129	129	127	121	114	109
Fri	108	106	104	103	99	95	92	92	91	90	90	90	94	97	101	106	110	113	117	117	116	113	108	103
Sat	100	96	93	91	90	90	89	89	88	88	88	88	88	92	95	101	107	109	109	108	107	106	102	100
Sun	97	93	89	87	86	85	85	84	85	85	85	85	90	92	95	100	106	111	113	112	109	105	102	98
Mon	95	90	86	82	82	81	81	81	82	82	82	81	85	86	89	94	99	104	107	106	102	97	92	87
Tue	83	79	79	79	79	80	80	80	80	80	80	80	80	82	87	91	94	99	102	101	98	96	92	88