16 – 22 Nov 2022 · Vietnam · Wednesday to Tuesday, UTC+7

Vietnam weekly air quality

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

63.7Weekly mean modelled AQI · Moderate

Mean PM2.5: 17.4 µg/m³. Both means cover the selected cities hour by hour. They are not a national average or Vietnam’s official index.

-3.4 AQI compared with the previous week’s mean of 67.1.

Highest hourly estimate: 148 in Hanoi · 22 Nov, 03:00 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, 16 Nov	63.6Moderate	24–106	16.2	192 / 192
Thu, 17 Nov	59.3Moderate	24–100	15.5	192 / 192
Fri, 18 Nov	63.2Moderate	23–114	18	192 / 192
Sat, 19 Nov	63.6Moderate	24–110	16.2	192 / 192
Sun, 20 Nov	57.9Moderate	15–92	15.3	192 / 192
Mon, 21 Nov	65.1Moderate	16–146	20.7	192 / 192
Tue, 22 Nov	73.2Moderate	23–148	20	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	64	65	65	65	65	65	64	64	64	64	64	64	64	63	63	63	63	63	63	63	63	63	62	62
Thu	62	61	61	60	60	59	59	58	59	59	59	59	59	59	59	59	59	59	59	59	59	59	60	60
Fri	60	61	61	62	62	62	62	63	63	63	63	63	63	63	63	64	64	65	65	65	65	65	65	65
Sat	65	65	65	65	64	64	64	63	63	63	63	63	63	64	64	64	64	64	64	64	64	63	62	62
Sun	61	61	60	59	59	58	58	58	57	57	57	57	57	57	57	57	57	57	57	57	57	57	58	58
Mon	58	59	59	60	61	62	63	64	65	65	65	65	66	66	66	66	66	67	68	69	70	70	71	72
Tue	73	72	73	74	74	74	74	74	74	74	74	74	73	74	73	73	73	73	73	73	73	72	71	70

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
Ho Chi Minh City	93.3Moderate	114	31.5	168 / 168
Hanoi	92.4Moderate	148	31.2	168 / 168
Can Tho	74.2Moderate	90	21.7	168 / 168
Hai Phong	67.9Moderate	103	18.4	168 / 168
Hue	55.5Moderate	60	12	168 / 168
Da Nang	55Moderate	64	11.8	168 / 168
Nha Trang	46.8Good	52	8.3	168 / 168
Da Lat	24.4Good	33	4.3	168 / 168

City-hours by category

Good: 325

Moderate: 917

Unhealthy for Sensitive Groups: 102

Unhealthy: 0

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	64	65	65	65	65	65	64	64	64	64	64	64	64	63	63	63	63	63	63	63	63	63	62	62
Thu	62	61	61	60	60	59	59	58	59	59	59	59	59	59	59	59	59	59	59	59	59	59	60	60
Fri	60	61	61	62	62	62	62	63	63	63	63	63	63	63	63	64	64	65	65	65	65	65	65	65
Sat	65	65	65	65	64	64	64	63	63	63	63	63	63	64	64	64	64	64	64	64	64	63	62	62
Sun	61	61	60	59	59	58	58	58	57	57	57	57	57	57	57	57	57	57	57	57	57	57	58	58
Mon	58	59	59	60	61	62	63	64	65	65	65	65	66	66	66	66	66	67	68	69	70	70	71	72
Tue	73	72	73	74	74	74	74	74	74	74	74	74	73	74	73	73	73	73	73	73	73	72	71	70

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	64	65	65	65	65	65	64	64	64	64	64	64	64	63	63	63	63	63	63	63	63	63	62	62
Thu	62	61	61	60	60	59	59	58	59	59	59	59	59	59	59	59	59	59	59	59	59	59	60	60
Fri	60	61	61	62	62	62	62	63	63	63	63	63	63	63	63	64	64	65	65	65	65	65	65	65
Sat	65	65	65	65	64	64	64	63	63	63	63	63	63	64	64	64	64	64	64	64	64	63	62	62
Sun	61	61	60	59	59	58	58	58	57	57	57	57	57	57	57	57	57	57	57	57	57	57	58	58
Mon	58	59	59	60	61	62	63	64	65	65	65	65	66	66	66	66	66	67	68	69	70	70	71	72
Tue	73	72	73	74	74	74	74	74	74	74	74	74	73	74	73	73	73	73	73	73	73	72	71	70

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	64	65	65	65	65	65	64	64	64	64	64	64	64	63	63	63	63	63	63	63	63	63	62	62
Thu	62	61	61	60	60	59	59	58	59	59	59	59	59	59	59	59	59	59	59	59	59	59	60	60
Fri	60	61	61	62	62	62	62	63	63	63	63	63	63	63	63	64	64	65	65	65	65	65	65	65
Sat	65	65	65	65	64	64	64	63	63	63	63	63	63	64	64	64	64	64	64	64	64	63	62	62
Sun	61	61	60	59	59	58	58	58	57	57	57	57	57	57	57	57	57	57	57	57	57	57	58	58
Mon	58	59	59	60	61	62	63	64	65	65	65	65	66	66	66	66	66	67	68	69	70	70	71	72
Tue	73	72	73	74	74	74	74	74	74	74	74	74	73	74	73	73	73	73	73	73	73	72	71	70