7 – 13 Jun 2023 · Vietnam · Wednesday to Tuesday, UTC+7

Vietnam weekly air quality

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

84.3Weekly mean modelled AQI · Moderate

Mean PM2.5: 29.7 µg/m³. Both means cover the selected cities hour by hour. They are not a national average or Vietnam’s official index.

+4.1 AQI compared with the previous week’s mean of 80.2.

Highest hourly estimate: 211 in Hanoi · 12 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, 7 Jun	77.5Moderate	23–178	27.6	192 / 192
Thu, 8 Jun	85.8Moderate	31–196	31.7	192 / 192
Fri, 9 Jun	84.2Moderate	35–198	24.2	192 / 192
Sat, 10 Jun	86.6Moderate	27–197	30.1	192 / 192
Sun, 11 Jun	86.3Moderate	20–211	31.7	192 / 192
Mon, 12 Jun	86.5Moderate	19–211	32.2	192 / 192
Tue, 13 Jun	83.4Moderate	21–176	30.2	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	74	74	74	74	74	74	74	74	73	74	74	74	74	75	75	77	80	84	87	87	86	85	84	82
Thu	80	80	81	81	82	83	84	84	85	85	85	85	85	84	84	84	86	89	92	94	94	93	91	89
Fri	88	86	85	84	83	82	82	81	81	81	80	80	80	80	81	84	87	91	93	92	90	87	84	82
Sat	80	79	78	78	77	79	79	80	81	82	82	83	83	84	87	90	95	99	102	102	100	97	93	89
Sun	86	84	84	84	84	83	83	83	83	82	82	82	82	82	84	86	90	93	95	96	95	92	90	87
Mon	85	82	82	83	83	83	84	84	85	85	86	85	86	86	85	85	89	92	94	95	94	92	87	85
Tue	84	84	84	84	84	83	83	83	82	82	81	81	81	81	81	82	82	83	85	86	87	86	85	86

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
Hai Phong	178.7Unhealthy	211	97.5	168 / 168
Hanoi	138Unhealthy for Sensitive Groups	211	56	168 / 168
Da Nang	79.6Moderate	162	15.8	168 / 168
Ho Chi Minh City	75.9Moderate	92	23.4	168 / 168
Hue	60.5Moderate	71	14.7	168 / 168
Nha Trang	56.5Moderate	75	12.2	168 / 168
Can Tho	56.1Moderate	63	12.5	168 / 168
Da Lat	29.3Good	44	5.3	168 / 168

City-hours by category

Good: 187

Moderate: 824

Unhealthy for Sensitive Groups: 81

Unhealthy: 234

Very Unhealthy: 18

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	74	74	74	74	74	74	74	74	73	74	74	74	74	75	75	77	80	84	87	87	86	85	84	82
Thu	80	80	81	81	82	83	84	84	85	85	85	85	85	84	84	84	86	89	92	94	94	93	91	89
Fri	88	86	85	84	83	82	82	81	81	81	80	80	80	80	81	84	87	91	93	92	90	87	84	82
Sat	80	79	78	78	77	79	79	80	81	82	82	83	83	84	87	90	95	99	102	102	100	97	93	89
Sun	86	84	84	84	84	83	83	83	83	82	82	82	82	82	84	86	90	93	95	96	95	92	90	87
Mon	85	82	82	83	83	83	84	84	85	85	86	85	86	86	85	85	89	92	94	95	94	92	87	85
Tue	84	84	84	84	84	83	83	83	82	82	81	81	81	81	81	82	82	83	85	86	87	86	85	86

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	74	74	74	74	74	74	74	74	73	74	74	74	74	75	75	77	80	84	87	87	86	85	84	82
Thu	80	80	81	81	82	83	84	84	85	85	85	85	85	84	84	84	86	89	92	94	94	93	91	89
Fri	88	86	85	84	83	82	82	81	81	81	80	80	80	80	81	84	87	91	93	92	90	87	84	82
Sat	80	79	78	78	77	79	79	80	81	82	82	83	83	84	87	90	95	99	102	102	100	97	93	89
Sun	86	84	84	84	84	83	83	83	83	82	82	82	82	82	84	86	90	93	95	96	95	92	90	87
Mon	85	82	82	83	83	83	84	84	85	85	86	85	86	86	85	85	89	92	94	95	94	92	87	85
Tue	84	84	84	84	84	83	83	83	82	82	81	81	81	81	81	82	82	83	85	86	87	86	85	86

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	74	74	74	74	74	74	74	74	73	74	74	74	74	75	75	77	80	84	87	87	86	85	84	82
Thu	80	80	81	81	82	83	84	84	85	85	85	85	85	84	84	84	86	89	92	94	94	93	91	89
Fri	88	86	85	84	83	82	82	81	81	81	80	80	80	80	81	84	87	91	93	92	90	87	84	82
Sat	80	79	78	78	77	79	79	80	81	82	82	83	83	84	87	90	95	99	102	102	100	97	93	89
Sun	86	84	84	84	84	83	83	83	83	82	82	82	82	82	84	86	90	93	95	96	95	92	90	87
Mon	85	82	82	83	83	83	84	84	85	85	86	85	86	86	85	85	89	92	94	95	94	92	87	85
Tue	84	84	84	84	84	83	83	83	82	82	81	81	81	81	81	82	82	83	85	86	87	86	85	86