14 – 20 Jun 2023 · Vietnam · Wednesday to Tuesday, UTC+7

Vietnam weekly air quality

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

80.4Weekly mean modelled AQI · Moderate

Mean PM2.5: 23.9 µg/m³. Both means cover the selected cities hour by hour. They are not a national average or Vietnam’s official index.

-3.9 AQI compared with the previous week’s mean of 84.3.

Highest hourly estimate: 203 in Hanoi · 16 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, 14 Jun	89.2Moderate	28–190	31.9	192 / 192
Thu, 15 Jun	92.9Moderate	49–200	29.3	192 / 192
Fri, 16 Jun	90Moderate	50–203	25.2	192 / 192
Sat, 17 Jun	75.3Moderate	42–149	19.9	192 / 192
Sun, 18 Jun	71.3Moderate	35–117	18.8	192 / 192
Mon, 19 Jun	68.6Moderate	34–123	20	192 / 192
Tue, 20 Jun	75.7Moderate	33–179	22.1	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	86	86	86	86	85	86	85	85	85	85	85	85	85	86	85	85	88	94	98	101	102	101	98	93
Thu	88	88	89	90	90	91	92	92	92	92	92	92	92	91	91	91	92	95	98	101	102	101	97	92
Fri	89	89	89	89	89	90	90	91	91	91	91	91	91	90	90	89	89	93	95	96	93	88	84	83
Sat	82	81	80	78	77	75	74	73	72	72	71	71	71	71	71	71	78	82	83	82	78	74	72	71
Sun	70	71	71	71	71	71	71	71	71	70	70	70	70	70	70	69	69	72	75	75	74	74	73	72
Mon	70	69	67	67	67	67	67	67	67	67	67	66	67	67	66	66	68	72	75	75	72	72	71	70
Tue	69	70	70	71	71	71	72	71	72	72	72	72	72	73	73	74	78	85	90	91	89	85	79	75

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	125.2Unhealthy for Sensitive Groups	196	49	168 / 168
Hanoi	122.7Unhealthy for Sensitive Groups	203	40.3	168 / 168
Ho Chi Minh City	89.5Moderate	106	29.8	168 / 168
Da Nang	71Moderate	120	16.9	168 / 168
Nha Trang	66.9Moderate	115	16.1	168 / 168
Hue	63.6Moderate	89	16	168 / 168
Can Tho	60.8Moderate	67	14.6	168 / 168
Da Lat	43.6Good	55	8.2	168 / 168

City-hours by category

Good: 125

Moderate: 1003

Unhealthy for Sensitive Groups: 128

Unhealthy: 86

Very Unhealthy: 2

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	86	86	86	86	85	86	85	85	85	85	85	85	85	86	85	85	88	94	98	101	102	101	98	93
Thu	88	88	89	90	90	91	92	92	92	92	92	92	92	91	91	91	92	95	98	101	102	101	97	92
Fri	89	89	89	89	89	90	90	91	91	91	91	91	91	90	90	89	89	93	95	96	93	88	84	83
Sat	82	81	80	78	77	75	74	73	72	72	71	71	71	71	71	71	78	82	83	82	78	74	72	71
Sun	70	71	71	71	71	71	71	71	71	70	70	70	70	70	70	69	69	72	75	75	74	74	73	72
Mon	70	69	67	67	67	67	67	67	67	67	67	66	67	67	66	66	68	72	75	75	72	72	71	70
Tue	69	70	70	71	71	71	72	71	72	72	72	72	72	73	73	74	78	85	90	91	89	85	79	75

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	86	86	86	86	85	86	85	85	85	85	85	85	85	86	85	85	88	94	98	101	102	101	98	93
Thu	88	88	89	90	90	91	92	92	92	92	92	92	92	91	91	91	92	95	98	101	102	101	97	92
Fri	89	89	89	89	89	90	90	91	91	91	91	91	91	90	90	89	89	93	95	96	93	88	84	83
Sat	82	81	80	78	77	75	74	73	72	72	71	71	71	71	71	71	78	82	83	82	78	74	72	71
Sun	70	71	71	71	71	71	71	71	71	70	70	70	70	70	70	69	69	72	75	75	74	74	73	72
Mon	70	69	67	67	67	67	67	67	67	67	67	66	67	67	66	66	68	72	75	75	72	72	71	70
Tue	69	70	70	71	71	71	72	71	72	72	72	72	72	73	73	74	78	85	90	91	89	85	79	75

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	86	86	86	86	85	86	85	85	85	85	85	85	85	86	85	85	88	94	98	101	102	101	98	93
Thu	88	88	89	90	90	91	92	92	92	92	92	92	92	91	91	91	92	95	98	101	102	101	97	92
Fri	89	89	89	89	89	90	90	91	91	91	91	91	91	90	90	89	89	93	95	96	93	88	84	83
Sat	82	81	80	78	77	75	74	73	72	72	71	71	71	71	71	71	78	82	83	82	78	74	72	71
Sun	70	71	71	71	71	71	71	71	71	70	70	70	70	70	70	69	69	72	75	75	74	74	73	72
Mon	70	69	67	67	67	67	67	67	67	67	67	66	67	67	66	66	68	72	75	75	72	72	71	70
Tue	69	70	70	71	71	71	72	71	72	72	72	72	72	73	73	74	78	85	90	91	89	85	79	75