28 Feb – 5 Mar 2024 · Vietnam · Wednesday to Tuesday, UTC+7

Vietnam weekly air quality

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

68.7Weekly mean modelled AQI · Moderate

Mean PM2.5: 19.4 µg/m³. Both means cover the selected cities hour by hour. They are not a national average or Vietnam’s official index.

+9.8 AQI compared with the previous week’s mean of 58.9.

Highest hourly estimate: 224 in Hanoi · 5 Mar, 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, 28 Feb	55.6Moderate	21–96	13.4	192 / 192
Thu, 29 Feb	55.2Moderate	24–98	11.9	192 / 192
Fri, 1 Mar	58.8Moderate	28–107	16.5	192 / 192
Sat, 2 Mar	67.8Moderate	31–138	21.4	192 / 192
Sun, 3 Mar	74.2Moderate	27–162	20.1	192 / 192
Mon, 4 Mar	73.1Moderate	31–187	20.5	192 / 192
Tue, 5 Mar	96Moderate	58–224	32	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	53	53	53	53	53	53	53	54	54	54	54	55	55	55	56	56	58	60	61	61	60	58	56	56
Thu	56	55	56	56	56	56	56	56	56	56	56	56	55	55	55	55	55	56	55	55	54	54	54	54
Fri	54	54	54	54	55	55	55	56	56	56	56	56	56	57	57	58	61	64	66	67	68	67	67	65
Sat	64	63	64	64	64	65	65	65	66	67	68	68	69	69	69	70	70	70	70	70	71	72	72	73
Sun	74	74	75	74	75	75	75	75	75	75	75	75	75	75	75	75	75	75	76	75	73	72	71	71
Mon	70	70	69	69	68	67	66	66	65	65	65	65	65	66	69	72	78	85	91	92	90	86	80	75
Tue	73	73	73	74	75	75	76	76	77	77	78	79	86	90	94	105	118	130	137	138	137	132	123	110

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	116.6Unhealthy for Sensitive Groups	224	45.2	168 / 168
Hai Phong	82.4Moderate	189	26.1	168 / 168
Da Nang	74.3Moderate	219	16.7	168 / 168
Hue	67Moderate	173	16.7	168 / 168
Ho Chi Minh City	59.3Moderate	74	14.7	168 / 168
Can Tho	55.7Moderate	98	14.3	168 / 168
Nha Trang	55Moderate	63	12.2	168 / 168
Da Lat	39.1Good	75	9.3	168 / 168

City-hours by category

Good: 186

Moderate: 994

Unhealthy for Sensitive Groups: 107

Unhealthy: 46

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	53	53	53	53	53	53	53	54	54	54	54	55	55	55	56	56	58	60	61	61	60	58	56	56
Thu	56	55	56	56	56	56	56	56	56	56	56	56	55	55	55	55	55	56	55	55	54	54	54	54
Fri	54	54	54	54	55	55	55	56	56	56	56	56	56	57	57	58	61	64	66	67	68	67	67	65
Sat	64	63	64	64	64	65	65	65	66	67	68	68	69	69	69	70	70	70	70	70	71	72	72	73
Sun	74	74	75	74	75	75	75	75	75	75	75	75	75	75	75	75	75	75	76	75	73	72	71	71
Mon	70	70	69	69	68	67	66	66	65	65	65	65	65	66	69	72	78	85	91	92	90	86	80	75
Tue	73	73	73	74	75	75	76	76	77	77	78	79	86	90	94	105	118	130	137	138	137	132	123	110

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	53	53	53	53	53	53	53	54	54	54	54	55	55	55	56	56	58	60	61	61	60	58	56	56
Thu	56	55	56	56	56	56	56	56	56	56	56	56	55	55	55	55	55	56	55	55	54	54	54	54
Fri	54	54	54	54	55	55	55	56	56	56	56	56	56	57	57	58	61	64	66	67	68	67	67	65
Sat	64	63	64	64	64	65	65	65	66	67	68	68	69	69	69	70	70	70	70	70	71	72	72	73
Sun	74	74	75	74	75	75	75	75	75	75	75	75	75	75	75	75	75	75	76	75	73	72	71	71
Mon	70	70	69	69	68	67	66	66	65	65	65	65	65	66	69	72	78	85	91	92	90	86	80	75
Tue	73	73	73	74	75	75	76	76	77	77	78	79	86	90	94	105	118	130	137	138	137	132	123	110

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	53	53	53	53	53	53	53	54	54	54	54	55	55	55	56	56	58	60	61	61	60	58	56	56
Thu	56	55	56	56	56	56	56	56	56	56	56	56	55	55	55	55	55	56	55	55	54	54	54	54
Fri	54	54	54	54	55	55	55	56	56	56	56	56	56	57	57	58	61	64	66	67	68	67	67	65
Sat	64	63	64	64	64	65	65	65	66	67	68	68	69	69	69	70	70	70	70	70	71	72	72	73
Sun	74	74	75	74	75	75	75	75	75	75	75	75	75	75	75	75	75	75	76	75	73	72	71	71
Mon	70	70	69	69	68	67	66	66	65	65	65	65	65	66	69	72	78	85	91	92	90	86	80	75
Tue	73	73	73	74	75	75	76	76	77	77	78	79	86	90	94	105	118	130	137	138	137	132	123	110