6 – 12 Mar 2024 · Vietnam · Wednesday to Tuesday, UTC+7

Vietnam weekly air quality

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

86.5Weekly mean modelled AQI · Moderate

Mean PM2.5: 25.5 µg/m³. Both means cover the selected cities hour by hour. They are not a national average or Vietnam’s official index.

+17.8 AQI compared with the previous week’s mean of 68.7.

Highest hourly estimate: 259 in Da Nang · 6 Mar, 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, 6 Mar	107.9Unhealthy for Sensitive Groups	63–259	32	192 / 192
Thu, 7 Mar	100.3Unhealthy for Sensitive Groups	71–170	34.8	192 / 192
Fri, 8 Mar	93.6Moderate	55–160	25.3	192 / 192
Sat, 9 Mar	83.8Moderate	50–168	29.3	192 / 192
Sun, 10 Mar	79.1Moderate	57–163	18.1	192 / 192
Mon, 11 Mar	67.6Moderate	50–127	16.5	192 / 192
Tue, 12 Mar	72.9Moderate	46–155	22.4	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	100	94	95	95	96	96	97	97	97	98	99	103	107	108	110	113	120	127	131	129	125	122	118	113
Thu	106	99	96	95	95	95	96	96	97	97	98	98	99	101	102	104	105	106	107	106	104	103	102	102
Fri	101	101	101	101	101	100	100	99	99	97	96	95	94	93	92	91	89	89	87	86	85	84	83	82
Sat	82	81	80	80	79	79	79	79	79	79	80	80	81	82	83	84	88	91	93	93	92	90	88	88
Sun	88	88	88	87	87	86	86	84	83	82	81	79	78	77	75	76	76	76	76	74	71	69	67	67
Mon	67	67	67	67	67	67	67	67	67	67	66	66	65	65	65	68	70	71	72	71	71	69	67	65
Tue	64	64	64	65	65	66	67	68	69	70	71	72	73	73	76	78	79	81	82	82	81	81	80	79

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	132.1Unhealthy for Sensitive Groups	168	50.6	168 / 168
Hai Phong	108.2Unhealthy for Sensitive Groups	139	37.6	168 / 168
Da Nang	97.6Moderate	259	23.9	168 / 168
Hue	81.5Moderate	202	21.5	168 / 168
Ho Chi Minh City	72.9Moderate	112	20.1	168 / 168
Can Tho	70.9Moderate	94	18.3	168 / 168
Da Lat	64.7Moderate	94	15.9	168 / 168
Nha Trang	63.6Moderate	79	15.9	168 / 168

City-hours by category

Good: 30

Moderate: 979

Unhealthy for Sensitive Groups: 232

Unhealthy: 92

Very Unhealthy: 11

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	100	94	95	95	96	96	97	97	97	98	99	103	107	108	110	113	120	127	131	129	125	122	118	113
Thu	106	99	96	95	95	95	96	96	97	97	98	98	99	101	102	104	105	106	107	106	104	103	102	102
Fri	101	101	101	101	101	100	100	99	99	97	96	95	94	93	92	91	89	89	87	86	85	84	83	82
Sat	82	81	80	80	79	79	79	79	79	79	80	80	81	82	83	84	88	91	93	93	92	90	88	88
Sun	88	88	88	87	87	86	86	84	83	82	81	79	78	77	75	76	76	76	76	74	71	69	67	67
Mon	67	67	67	67	67	67	67	67	67	67	66	66	65	65	65	68	70	71	72	71	71	69	67	65
Tue	64	64	64	65	65	66	67	68	69	70	71	72	73	73	76	78	79	81	82	82	81	81	80	79

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	100	94	95	95	96	96	97	97	97	98	99	103	107	108	110	113	120	127	131	129	125	122	118	113
Thu	106	99	96	95	95	95	96	96	97	97	98	98	99	101	102	104	105	106	107	106	104	103	102	102
Fri	101	101	101	101	101	100	100	99	99	97	96	95	94	93	92	91	89	89	87	86	85	84	83	82
Sat	82	81	80	80	79	79	79	79	79	79	80	80	81	82	83	84	88	91	93	93	92	90	88	88
Sun	88	88	88	87	87	86	86	84	83	82	81	79	78	77	75	76	76	76	76	74	71	69	67	67
Mon	67	67	67	67	67	67	67	67	67	67	66	66	65	65	65	68	70	71	72	71	71	69	67	65
Tue	64	64	64	65	65	66	67	68	69	70	71	72	73	73	76	78	79	81	82	82	81	81	80	79

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	100	94	95	95	96	96	97	97	97	98	99	103	107	108	110	113	120	127	131	129	125	122	118	113
Thu	106	99	96	95	95	95	96	96	97	97	98	98	99	101	102	104	105	106	107	106	104	103	102	102
Fri	101	101	101	101	101	100	100	99	99	97	96	95	94	93	92	91	89	89	87	86	85	84	83	82
Sat	82	81	80	80	79	79	79	79	79	79	80	80	81	82	83	84	88	91	93	93	92	90	88	88
Sun	88	88	88	87	87	86	86	84	83	82	81	79	78	77	75	76	76	76	76	74	71	69	67	67
Mon	67	67	67	67	67	67	67	67	67	67	66	66	65	65	65	68	70	71	72	71	71	69	67	65
Tue	64	64	64	65	65	66	67	68	69	70	71	72	73	73	76	78	79	81	82	82	81	81	80	79