29 May – 4 Jun 2024 · Vietnam · Wednesday to Tuesday, UTC+7

Vietnam weekly air quality

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

84.8Weekly mean modelled AQI · Moderate

Mean PM2.5: 22.9 µg/m³. Both means cover the selected cities hour by hour. They are not a national average or Vietnam’s official index.

-0.8 AQI compared with the previous week’s mean of 85.6.

Highest hourly estimate: 241 in Da Nang · 3 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, 29 May	85.1Moderate	44–221	20	192 / 192
Thu, 30 May	74Moderate	42–205	17.9	192 / 192
Fri, 31 May	63.2Moderate	34–124	16.9	192 / 192
Sat, 1 Jun	85.5Moderate	44–178	29	192 / 192
Sun, 2 Jun	100.9Unhealthy for Sensitive Groups	52–240	27.5	192 / 192
Mon, 3 Jun	96.1Moderate	55–241	24.5	192 / 192
Tue, 4 Jun	88.6Moderate	51–230	24.3	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	81	81	80	80	80	80	79	79	78	77	76	75	78	79	83	92	99	104	105	103	99	92	84
Thu	77	71	70	69	69	69	69	69	69	69	69	69	69	69	69	75	81	85	86	85	82	81	79	76
Fri	72	66	66	65	65	64	64	63	63	62	62	61	61	61	60	60	61	63	64	64	63	63	62	63
Sat	65	66	68	69	71	73	74	75	77	79	80	81	82	87	92	97	102	107	108	107	105	100	97	94
Sun	93	92	92	91	90	89	89	89	89	88	88	93	96	98	102	105	114	119	124	125	123	119	110	104
Mon	98	95	93	90	86	84	83	82	82	82	81	85	88	90	95	100	108	119	124	125	119	111	101	88
Tue	80	80	80	80	79	79	79	79	79	80	80	81	84	85	90	94	99	105	108	107	105	102	99	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
Da Nang	127.3Unhealthy for Sensitive Groups	241	26.2	168 / 168
Hanoi	118.3Unhealthy for Sensitive Groups	212	38.3	168 / 168
Ho Chi Minh City	94.8Moderate	115	33.2	168 / 168
Hai Phong	81.8Moderate	156	22.3	168 / 168
Hue	72.9Moderate	154	19.6	168 / 168
Nha Trang	70.6Moderate	136	17.3	168 / 168
Can Tho	63.5Moderate	78	16.5	168 / 168
Da Lat	48.9Good	58	9.6	168 / 168

City-hours by category

Good: 71

Moderate: 973

Unhealthy for Sensitive Groups: 203

Unhealthy: 60

Very Unhealthy: 37

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	81	81	80	80	80	80	79	79	78	77	76	75	78	79	83	92	99	104	105	103	99	92	84
Thu	77	71	70	69	69	69	69	69	69	69	69	69	69	69	69	75	81	85	86	85	82	81	79	76
Fri	72	66	66	65	65	64	64	63	63	62	62	61	61	61	60	60	61	63	64	64	63	63	62	63
Sat	65	66	68	69	71	73	74	75	77	79	80	81	82	87	92	97	102	107	108	107	105	100	97	94
Sun	93	92	92	91	90	89	89	89	89	88	88	93	96	98	102	105	114	119	124	125	123	119	110	104
Mon	98	95	93	90	86	84	83	82	82	82	81	85	88	90	95	100	108	119	124	125	119	111	101	88
Tue	80	80	80	80	79	79	79	79	79	80	80	81	84	85	90	94	99	105	108	107	105	102	99	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	81	81	81	80	80	80	80	79	79	78	77	76	75	78	79	83	92	99	104	105	103	99	92	84
Thu	77	71	70	69	69	69	69	69	69	69	69	69	69	69	69	75	81	85	86	85	82	81	79	76
Fri	72	66	66	65	65	64	64	63	63	62	62	61	61	61	60	60	61	63	64	64	63	63	62	63
Sat	65	66	68	69	71	73	74	75	77	79	80	81	82	87	92	97	102	107	108	107	105	100	97	94
Sun	93	92	92	91	90	89	89	89	89	88	88	93	96	98	102	105	114	119	124	125	123	119	110	104
Mon	98	95	93	90	86	84	83	82	82	82	81	85	88	90	95	100	108	119	124	125	119	111	101	88
Tue	80	80	80	80	79	79	79	79	79	80	80	81	84	85	90	94	99	105	108	107	105	102	99	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	81	81	81	80	80	80	80	79	79	78	77	76	75	78	79	83	92	99	104	105	103	99	92	84
Thu	77	71	70	69	69	69	69	69	69	69	69	69	69	69	69	75	81	85	86	85	82	81	79	76
Fri	72	66	66	65	65	64	64	63	63	62	62	61	61	61	60	60	61	63	64	64	63	63	62	63
Sat	65	66	68	69	71	73	74	75	77	79	80	81	82	87	92	97	102	107	108	107	105	100	97	94
Sun	93	92	92	91	90	89	89	89	89	88	88	93	96	98	102	105	114	119	124	125	123	119	110	104
Mon	98	95	93	90	86	84	83	82	82	82	81	85	88	90	95	100	108	119	124	125	119	111	101	88
Tue	80	80	80	80	79	79	79	79	79	80	80	81	84	85	90	94	99	105	108	107	105	102	99	94