31 Jul – 6 Aug 2024 · Vietnam · Wednesday to Tuesday, UTC+7

Vietnam weekly air quality

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

87.2Weekly mean modelled AQI · Moderate

Mean PM2.5: 22.3 µg/m³. Both means cover the selected cities hour by hour. They are not a national average or Vietnam’s official index.

+10.7 AQI compared with the previous week’s mean of 76.5.

Highest hourly estimate: 238 in Da Nang · 5 Aug, 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, 31 Jul	77.6Moderate	51–202	20.5	192 / 192
Thu, 1 Aug	79.4Moderate	54–207	20.5	192 / 192
Fri, 2 Aug	86.9Moderate	56–235	22.2	192 / 192
Sat, 3 Aug	94.3Moderate	51–229	23.4	192 / 192
Sun, 4 Aug	92.8Moderate	53–230	22.9	192 / 192
Mon, 5 Aug	86.7Moderate	40–238	22.3	192 / 192
Tue, 6 Aug	92.5Moderate	41–231	24.4	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	81	78	76	73	71	71	71	70	71	71	71	71	71	71	71	75	80	86	91	93	92	88	87	86
Thu	83	80	77	74	72	72	72	73	73	73	73	73	72	72	72	75	82	89	94	96	93	89	88	87
Fri	86	84	82	80	78	76	74	73	73	74	74	74	78	81	83	88	96	104	110	112	110	105	100	94
Sat	90	88	86	85	84	84	83	82	80	79	79	80	83	85	88	98	110	121	126	125	119	111	102	94
Sun	90	88	88	88	87	86	85	83	82	81	82	84	87	90	92	94	100	109	113	113	109	104	100	92
Mon	86	84	83	82	79	76	73	72	72	72	72	73	75	77	82	87	93	106	113	115	112	107	99	90
Tue	86	84	82	82	81	81	80	79	79	79	80	82	85	89	93	95	105	116	121	122	118	111	99	90

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	155.6Unhealthy	238	29.3	168 / 168
Hanoi	102Unhealthy for Sensitive Groups	212	33.7	168 / 168
Ho Chi Minh City	91.8Moderate	119	30.2	168 / 168
Hue	85.9Moderate	185	23	168 / 168
Nha Trang	82.3Moderate	149	19.7	168 / 168
Hai Phong	65.2Moderate	108	16.9	168 / 168
Can Tho	62Moderate	72	14.9	168 / 168
Da Lat	52.5Moderate	61	10.7	168 / 168

City-hours by category

Good: 38

Moderate: 1009

Unhealthy for Sensitive Groups: 176

Unhealthy: 66

Very Unhealthy: 55

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	81	78	76	73	71	71	71	70	71	71	71	71	71	71	71	75	80	86	91	93	92	88	87	86
Thu	83	80	77	74	72	72	72	73	73	73	73	73	72	72	72	75	82	89	94	96	93	89	88	87
Fri	86	84	82	80	78	76	74	73	73	74	74	74	78	81	83	88	96	104	110	112	110	105	100	94
Sat	90	88	86	85	84	84	83	82	80	79	79	80	83	85	88	98	110	121	126	125	119	111	102	94
Sun	90	88	88	88	87	86	85	83	82	81	82	84	87	90	92	94	100	109	113	113	109	104	100	92
Mon	86	84	83	82	79	76	73	72	72	72	72	73	75	77	82	87	93	106	113	115	112	107	99	90
Tue	86	84	82	82	81	81	80	79	79	79	80	82	85	89	93	95	105	116	121	122	118	111	99	90

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	81	78	76	73	71	71	71	70	71	71	71	71	71	71	71	75	80	86	91	93	92	88	87	86
Thu	83	80	77	74	72	72	72	73	73	73	73	73	72	72	72	75	82	89	94	96	93	89	88	87
Fri	86	84	82	80	78	76	74	73	73	74	74	74	78	81	83	88	96	104	110	112	110	105	100	94
Sat	90	88	86	85	84	84	83	82	80	79	79	80	83	85	88	98	110	121	126	125	119	111	102	94
Sun	90	88	88	88	87	86	85	83	82	81	82	84	87	90	92	94	100	109	113	113	109	104	100	92
Mon	86	84	83	82	79	76	73	72	72	72	72	73	75	77	82	87	93	106	113	115	112	107	99	90
Tue	86	84	82	82	81	81	80	79	79	79	80	82	85	89	93	95	105	116	121	122	118	111	99	90

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	81	78	76	73	71	71	71	70	71	71	71	71	71	71	71	75	80	86	91	93	92	88	87	86
Thu	83	80	77	74	72	72	72	73	73	73	73	73	72	72	72	75	82	89	94	96	93	89	88	87
Fri	86	84	82	80	78	76	74	73	73	74	74	74	78	81	83	88	96	104	110	112	110	105	100	94
Sat	90	88	86	85	84	84	83	82	80	79	79	80	83	85	88	98	110	121	126	125	119	111	102	94
Sun	90	88	88	88	87	86	85	83	82	81	82	84	87	90	92	94	100	109	113	113	109	104	100	92
Mon	86	84	83	82	79	76	73	72	72	72	72	73	75	77	82	87	93	106	113	115	112	107	99	90
Tue	86	84	82	82	81	81	80	79	79	79	80	82	85	89	93	95	105	116	121	122	118	111	99	90