2 – 8 Jul 2025 · Vietnam · Wednesday to Tuesday, UTC+7

Vietnam weekly air quality

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

91.7Weekly mean modelled AQI · Moderate

Mean PM2.5: 26.6 µg/m³. Both means cover the selected cities hour by hour. They are not a national average or Vietnam’s official index.

-4.6 AQI compared with the previous week’s mean of 96.3.

Highest hourly estimate: 241 in Da Nang · 7 Jul, 19:00 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, 2 Jul	80.6Moderate	52–176	21.4	192 / 192
Thu, 3 Jul	79.4Moderate	35–166	24.1	192 / 192
Fri, 4 Jul	95Moderate	37–212	27.6	192 / 192
Sat, 5 Jul	97.3Moderate	44–226	28.8	192 / 192
Sun, 6 Jul	94.3Moderate	44–215	28.3	192 / 192
Mon, 7 Jul	100Moderate	46–241	27	192 / 192
Tue, 8 Jul	95.1Moderate	34–212	29.2	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	80	78	78	78	77	77	77	77	77	77	77	77	78	82	86	88	89	89	88	86	82	79	75
Thu	74	74	74	74	74	74	74	73	73	74	73	73	76	78	80	82	85	89	90	90	90	89	88	86
Fri	83	83	82	82	83	84	85	87	87	87	88	87	91	94	99	102	106	109	111	112	112	111	110	107
Sat	103	101	99	97	93	89	86	86	86	86	86	89	91	94	99	102	105	108	110	110	108	105	102	102
Sun	100	98	97	95	93	89	85	85	85	84	85	85	85	88	91	96	101	105	107	106	103	102	101	101
Mon	100	98	96	95	94	91	88	85	84	84	84	84	89	91	96	102	112	122	126	126	123	117	110	104
Tue	101	97	94	90	85	82	82	82	82	83	83	83	83	85	90	95	108	117	121	120	118	111	101	94

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	142.8Unhealthy for Sensitive Groups	217	56.9	168 / 168
Da Nang	135.3Unhealthy for Sensitive Groups	241	22.4	168 / 168
Ho Chi Minh City	106.9Unhealthy for Sensitive Groups	141	37.2	168 / 168
Hai Phong	80.5Moderate	198	27.2	168 / 168
Can Tho	75.9Moderate	96	23	168 / 168
Hue	73.1Moderate	103	20.5	168 / 168
Nha Trang	73Moderate	128	17.3	168 / 168
Da Lat	46Good	57	8.6	168 / 168

City-hours by category

Good: 118

Moderate: 845

Unhealthy for Sensitive Groups: 211

Unhealthy: 122

Very Unhealthy: 48

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	80	78	78	78	77	77	77	77	77	77	77	77	78	82	86	88	89	89	88	86	82	79	75
Thu	74	74	74	74	74	74	74	73	73	74	73	73	76	78	80	82	85	89	90	90	90	89	88	86
Fri	83	83	82	82	83	84	85	87	87	87	88	87	91	94	99	102	106	109	111	112	112	111	110	107
Sat	103	101	99	97	93	89	86	86	86	86	86	89	91	94	99	102	105	108	110	110	108	105	102	102
Sun	100	98	97	95	93	89	85	85	85	84	85	85	85	88	91	96	101	105	107	106	103	102	101	101
Mon	100	98	96	95	94	91	88	85	84	84	84	84	89	91	96	102	112	122	126	126	123	117	110	104
Tue	101	97	94	90	85	82	82	82	82	83	83	83	83	85	90	95	108	117	121	120	118	111	101	94

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	80	78	78	78	77	77	77	77	77	77	77	77	78	82	86	88	89	89	88	86	82	79	75
Thu	74	74	74	74	74	74	74	73	73	74	73	73	76	78	80	82	85	89	90	90	90	89	88	86
Fri	83	83	82	82	83	84	85	87	87	87	88	87	91	94	99	102	106	109	111	112	112	111	110	107
Sat	103	101	99	97	93	89	86	86	86	86	86	89	91	94	99	102	105	108	110	110	108	105	102	102
Sun	100	98	97	95	93	89	85	85	85	84	85	85	85	88	91	96	101	105	107	106	103	102	101	101
Mon	100	98	96	95	94	91	88	85	84	84	84	84	89	91	96	102	112	122	126	126	123	117	110	104
Tue	101	97	94	90	85	82	82	82	82	83	83	83	83	85	90	95	108	117	121	120	118	111	101	94

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	80	78	78	78	77	77	77	77	77	77	77	77	78	82	86	88	89	89	88	86	82	79	75
Thu	74	74	74	74	74	74	74	73	73	74	73	73	76	78	80	82	85	89	90	90	90	89	88	86
Fri	83	83	82	82	83	84	85	87	87	87	88	87	91	94	99	102	106	109	111	112	112	111	110	107
Sat	103	101	99	97	93	89	86	86	86	86	86	89	91	94	99	102	105	108	110	110	108	105	102	102
Sun	100	98	97	95	93	89	85	85	85	84	85	85	85	88	91	96	101	105	107	106	103	102	101	101
Mon	100	98	96	95	94	91	88	85	84	84	84	84	89	91	96	102	112	122	126	126	123	117	110	104
Tue	101	97	94	90	85	82	82	82	82	83	83	83	83	85	90	95	108	117	121	120	118	111	101	94