24 – 30 Jul 2024 · Vietnam · Wednesday to Tuesday, UTC+7

Vietnam weekly air quality

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

76.5Weekly mean modelled AQI · Moderate

Mean PM2.5: 21.5 µg/m³. Both means cover the selected cities hour by hour. They are not a national average or Vietnam’s official index.

+12.2 AQI compared with the previous week’s mean of 64.3.

Highest hourly estimate: 238 in Hai Phong · 26 Jul, 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, 24 Jul	68.5Moderate	39–135	19.4	192 / 192
Thu, 25 Jul	75.8Moderate	19–172	22	192 / 192
Fri, 26 Jul	76Moderate	16–238	23.2	192 / 192
Sat, 27 Jul	82.8Moderate	20–230	22.1	192 / 192
Sun, 28 Jul	78.7Moderate	36–142	22.7	192 / 192
Mon, 29 Jul	77.8Moderate	50–134	21.3	192 / 192
Tue, 30 Jul	75.7Moderate	54–175	19.9	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	68	68	68	68	68	67	67	66	66	65	65	65	65	64	64	66	68	70	76	78	78	75	71	69
Thu	69	70	72	73	74	75	76	77	77	78	78	78	78	78	77	77	77	80	81	80	77	75	74	73
Fri	72	71	70	69	69	69	69	69	69	70	70	71	71	72	72	80	86	89	91	92	89	86	81	79
Sat	74	74	73	73	73	73	72	72	71	70	69	69	69	71	76	87	99	106	111	111	108	103	97	88
Sun	80	77	76	76	77	77	77	77	78	78	78	78	78	78	78	77	77	80	82	84	83	82	82	80
Mon	78	77	78	78	78	78	78	78	78	78	78	77	77	76	76	76	77	80	81	81	80	79	77	75
Tue	73	73	72	73	72	72	72	72	71	71	71	70	70	70	71	70	75	82	87	88	88	87	84	82

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	127.1Unhealthy for Sensitive Groups	230	43	168 / 168
Hai Phong	114.1Unhealthy for Sensitive Groups	238	37.8	168 / 168
Ho Chi Minh City	82.8Moderate	91	26.4	168 / 168
Da Nang	72.9Moderate	186	13.5	168 / 168
Can Tho	67.9Moderate	77	18.1	168 / 168
Nha Trang	59.4Moderate	112	14.4	168 / 168
Hue	48Good	74	11.6	168 / 168
Da Lat	39.7Good	58	7.5	168 / 168

City-hours by category

Good: 254

Moderate: 863

Unhealthy for Sensitive Groups: 148

Unhealthy: 62

Very Unhealthy: 17

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	68	68	68	68	68	67	67	66	66	65	65	65	65	64	64	66	68	70	76	78	78	75	71	69
Thu	69	70	72	73	74	75	76	77	77	78	78	78	78	78	77	77	77	80	81	80	77	75	74	73
Fri	72	71	70	69	69	69	69	69	69	70	70	71	71	72	72	80	86	89	91	92	89	86	81	79
Sat	74	74	73	73	73	73	72	72	71	70	69	69	69	71	76	87	99	106	111	111	108	103	97	88
Sun	80	77	76	76	77	77	77	77	78	78	78	78	78	78	78	77	77	80	82	84	83	82	82	80
Mon	78	77	78	78	78	78	78	78	78	78	78	77	77	76	76	76	77	80	81	81	80	79	77	75
Tue	73	73	72	73	72	72	72	72	71	71	71	70	70	70	71	70	75	82	87	88	88	87	84	82

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	68	68	68	68	68	67	67	66	66	65	65	65	65	64	64	66	68	70	76	78	78	75	71	69
Thu	69	70	72	73	74	75	76	77	77	78	78	78	78	78	77	77	77	80	81	80	77	75	74	73
Fri	72	71	70	69	69	69	69	69	69	70	70	71	71	72	72	80	86	89	91	92	89	86	81	79
Sat	74	74	73	73	73	73	72	72	71	70	69	69	69	71	76	87	99	106	111	111	108	103	97	88
Sun	80	77	76	76	77	77	77	77	78	78	78	78	78	78	78	77	77	80	82	84	83	82	82	80
Mon	78	77	78	78	78	78	78	78	78	78	78	77	77	76	76	76	77	80	81	81	80	79	77	75
Tue	73	73	72	73	72	72	72	72	71	71	71	70	70	70	71	70	75	82	87	88	88	87	84	82

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	68	68	68	68	68	67	67	66	66	65	65	65	65	64	64	66	68	70	76	78	78	75	71	69
Thu	69	70	72	73	74	75	76	77	77	78	78	78	78	78	77	77	77	80	81	80	77	75	74	73
Fri	72	71	70	69	69	69	69	69	69	70	70	71	71	72	72	80	86	89	91	92	89	86	81	79
Sat	74	74	73	73	73	73	72	72	71	70	69	69	69	71	76	87	99	106	111	111	108	103	97	88
Sun	80	77	76	76	77	77	77	77	78	78	78	78	78	78	78	77	77	80	82	84	83	82	82	80
Mon	78	77	78	78	78	78	78	78	78	78	78	77	77	76	76	76	77	80	81	81	80	79	77	75
Tue	73	73	72	73	72	72	72	72	71	71	71	70	70	70	71	70	75	82	87	88	88	87	84	82