30 Oct – 5 Nov 2024 · Vietnam · Wednesday to Tuesday, UTC+7

Vietnam weekly air quality

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

73.2Weekly mean modelled AQI · Moderate

Mean PM2.5: 21.2 µg/m³. Both means cover the selected cities hour by hour. They are not a national average or Vietnam’s official index.

+5.6 AQI compared with the previous week’s mean of 67.6.

Highest hourly estimate: 164 in Hanoi · 1 Nov, 04:00 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, 30 Oct	60.5Moderate	27–107	15.5	192 / 192
Thu, 31 Oct	72.1Moderate	30–163	24.1	192 / 192
Fri, 1 Nov	87.5Moderate	40–164	23	192 / 192
Sat, 2 Nov	78.7Moderate	31–135	22.9	192 / 192
Sun, 3 Nov	77.2Moderate	29–126	22.7	192 / 192
Mon, 4 Nov	73.8Moderate	29–143	17.7	192 / 192
Tue, 5 Nov	62.7Moderate	31–133	22.3	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	57	57	57	57	58	58	59	59	59	59	58	58	58	59	59	60	61	64	67	67	67	66	65	64
Thu	62	61	62	63	63	64	65	66	67	68	69	70	70	71	71	72	74	81	87	88	86	86	85	83
Fri	80	79	80	80	81	81	82	82	82	82	82	82	83	85	88	93	99	104	106	104	99	93	89	86
Sat	83	81	80	79	78	78	77	77	77	77	77	77	76	76	76	78	81	82	82	81	80	79	79	79
Sun	79	79	80	79	79	79	78	77	76	76	76	75	75	75	75	77	78	80	81	80	76	74	74	74
Mon	75	76	76	76	76	77	77	77	77	77	77	76	76	75	75	74	73	72	71	70	69	68	66	65
Tue	64	62	61	61	60	59	59	58	59	59	60	60	61	61	62	62	63	64	65	66	68	69	71	72

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	113.3Unhealthy for Sensitive Groups	164	43.6	168 / 168
Hai Phong	93.4Moderate	158	32.4	168 / 168
Ho Chi Minh City	86.3Moderate	138	27.3	168 / 168
Da Nang	73.3Moderate	143	16.6	168 / 168
Can Tho	62.9Moderate	99	16.5	168 / 168
Hue	61.6Moderate	133	15.2	168 / 168
Nha Trang	56.4Moderate	107	11	168 / 168
Da Lat	38.3Good	53	6.7	168 / 168

City-hours by category

Good: 322

Moderate: 829

Unhealthy for Sensitive Groups: 159

Unhealthy: 34

Very Unhealthy: 0

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	57	57	57	57	58	58	59	59	59	59	58	58	58	59	59	60	61	64	67	67	67	66	65	64
Thu	62	61	62	63	63	64	65	66	67	68	69	70	70	71	71	72	74	81	87	88	86	86	85	83
Fri	80	79	80	80	81	81	82	82	82	82	82	82	83	85	88	93	99	104	106	104	99	93	89	86
Sat	83	81	80	79	78	78	77	77	77	77	77	77	76	76	76	78	81	82	82	81	80	79	79	79
Sun	79	79	80	79	79	79	78	77	76	76	76	75	75	75	75	77	78	80	81	80	76	74	74	74
Mon	75	76	76	76	76	77	77	77	77	77	77	76	76	75	75	74	73	72	71	70	69	68	66	65
Tue	64	62	61	61	60	59	59	58	59	59	60	60	61	61	62	62	63	64	65	66	68	69	71	72

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	57	57	57	57	58	58	59	59	59	59	58	58	58	59	59	60	61	64	67	67	67	66	65	64
Thu	62	61	62	63	63	64	65	66	67	68	69	70	70	71	71	72	74	81	87	88	86	86	85	83
Fri	80	79	80	80	81	81	82	82	82	82	82	82	83	85	88	93	99	104	106	104	99	93	89	86
Sat	83	81	80	79	78	78	77	77	77	77	77	77	76	76	76	78	81	82	82	81	80	79	79	79
Sun	79	79	80	79	79	79	78	77	76	76	76	75	75	75	75	77	78	80	81	80	76	74	74	74
Mon	75	76	76	76	76	77	77	77	77	77	77	76	76	75	75	74	73	72	71	70	69	68	66	65
Tue	64	62	61	61	60	59	59	58	59	59	60	60	61	61	62	62	63	64	65	66	68	69	71	72

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	57	57	57	57	58	58	59	59	59	59	58	58	58	59	59	60	61	64	67	67	67	66	65	64
Thu	62	61	62	63	63	64	65	66	67	68	69	70	70	71	71	72	74	81	87	88	86	86	85	83
Fri	80	79	80	80	81	81	82	82	82	82	82	82	83	85	88	93	99	104	106	104	99	93	89	86
Sat	83	81	80	79	78	78	77	77	77	77	77	77	76	76	76	78	81	82	82	81	80	79	79	79
Sun	79	79	80	79	79	79	78	77	76	76	76	75	75	75	75	77	78	80	81	80	76	74	74	74
Mon	75	76	76	76	76	77	77	77	77	77	77	76	76	75	75	74	73	72	71	70	69	68	66	65
Tue	64	62	61	61	60	59	59	58	59	59	60	60	61	61	62	62	63	64	65	66	68	69	71	72