Air quality

Air quality in Việt Yên today

Updated

Unhealthy for Sensitive Groups (US AQI 103) People with heart or lung disease, older adults, children and teens should cut back on prolonged or heavy exertion outdoors. Model estimate for Mon, Oct 26, 8:00 am (01:00 UTC).

Live AQI, PM2.5, PM10 and ozone for Việt Yên, Bac Ninh, Vietnam, with a 48-hour forecast and the best time to be outside.

US AQI now
103 Unhealthy for Sensitive Groups
PM2.5
27 µg/m³ 1.8× WHO 24-h guideline
PM10
30 µg/m³
Ozone
101 µg/m³
Dominant pollutant
PM2.5 sub-index 103
Best hour today
2:00 pm AQI 99
European AQI
47

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Air quality in Việt Yên right now

Right now the modelled US Air Quality Index for Việt Yên, Bac Ninh, Vietnam is 103, which falls in the "Unhealthy for Sensitive Groups" band (up to 150). People with heart or lung disease, older adults, children and teens should cut back on prolonged or heavy exertion outdoors.

The index is driven mainly by PM2.5, whose own sub-index is 103. Fine and coarse particles come from traffic, heating, industry, dust and smoke; they build up on calm nights and clear when wind or rain arrives.

PM2.5 is 27 µg/m³, 1.8 times the WHO 24-hour guideline of 15 µg/m³; PM10 is 30 µg/m³ against a guideline of 45; ozone is 101 µg/m³ (above the WHO 8-hour level of 100); nitrogen dioxide is 18 µg/m³ (below the 24-hour guideline of 25).

Also this hour: UV index 1.5, carbon monoxide 389 µg/m³.

Việt Yên AQI forecast: next 48 hours

Over the next 24 hours the AQI is forecast to range from 99 around Mon 2:00 pm to 158 around Mon 6:00 pm, from "Moderate" at best to "Unhealthy" at worst.

The following day is expected to be worse, averaging about 157 against 119 for the next 24 hours.

Local time (Asia/Ho_Chi_Minh)US AQICategoryPM2.5 µg/m³PM10 µg/m³Ozone µg/m³
Mon 8:00 am103Unhealthy for Sensitive Groups27.130101
Mon 11:00 am102Unhealthy for Sensitive Groups23.525167
Mon 2:00 pm99Moderate29.230193
Mon 5:00 pm154Unhealthy28.529144
Mon 8:00 pm136Unhealthy for Sensitive Groups42.14364
Mon 11:00 pm103Unhealthy for Sensitive Groups82.28717
Tue 2:00 am118Unhealthy for Sensitive Groups818311
Tue 5:00 am126Unhealthy for Sensitive Groups73.17423
Tue 8:00 am138Unhealthy for Sensitive Groups71.57270
Tue 11:00 am149Unhealthy for Sensitive Groups45.346187
Tue 2:00 pm151Unhealthy3637201
Tue 5:00 pm169Unhealthy43.344148
Tue 8:00 pm155Unhealthy85.28652
Tue 11:00 pm158Unhealthy111.111239
Wed 2:00 am161Unhealthy108.710929
Wed 5:00 am163Unhealthy93.19420
Wed 8:00 am164Unhealthy78.57962

Every third hour of the CAMS forecast via Open-Meteo. US AQI uses rolling averages (24 h for particles, 8 h for ozone), so it moves more slowly than the hourly concentrations.

Best time to be outside in Việt Yên today

Between 6 am and 9 pm local time, the cleanest air today is forecast around 2:00 pm (AQI 99, Moderate) and the worst around 6:00 pm (AQI 158). That is a swing of 59 points, so a run or walk around 2:00 pm is noticeably better.

Việt Yên vs the rest of Vietnam

Across 68 Vietnam cities we track, the average US AQI right now is 83 (Moderate). Việt Yên at 103 is 20 points worse than average.

It ranks 63 of 68 from cleanest to most polluted; the cleanest is Phu Quoc (36) and the most polluted Mỹ Hào (117).

For context, the median across 3,909 cities worldwide is 57.

Air quality in cities near Việt Yên

CityDistanceUS AQICategoryPM2.5 µg/m³
Bắc Giang6 km117Unhealthy for Sensitive Groups29.6
Bắc Ninh11 km117Unhealthy for Sensitive Groups29.6
Thuận Thanh25 km117Unhealthy for Sensitive Groups29.6
Gia Lâm34 km117Unhealthy for Sensitive Groups29.6
Long Bien35 km117Unhealthy for Sensitive Groups29.6
Thành phố Sông Công38 km115Unhealthy for Sensitive Groups35.6
Mỹ Hào39 km117Unhealthy for Sensitive Groups29.6
Hoàn Kiếm40 km117Unhealthy for Sensitive Groups29.6

Model vs measured

We found no measured PM2.5 sensor cell within 25 km of Việt Yên, so the numbers on this page are model estimates. Models capture regional pollution well but can miss very local sources such as a busy road or a nearby fire.

Wildfire smoke

PM2.5 is forecast to reach 94 µg/m³ in the next 24 hours while NASA satellites detected 99 fire hotspots within 300 km in the last day (nearest about 26 km away). Smoke is a likely contributor: keep windows closed, run an air purifier or HVAC filter, and check the fire map before heading out.

Advice for sensitive groups

At 103, children, older adults, pregnant people and anyone with asthma, COPD or heart disease should limit time outdoors, especially strenuous activity. A well-fitted N95/FFP2 mask cuts particle exposure; it does not filter ozone.

What the US AQI numbers mean

US AQICategoryWhat it means
0-50GoodAir quality is satisfactory and poses little or no risk; a good time for outdoor activity.
51-100ModerateAcceptable for most people. Unusually sensitive people should consider shortening long or heavy exertion outdoors.
101-150Unhealthy for Sensitive GroupsPeople with heart or lung disease, older adults, children and teens should cut back on prolonged or heavy exertion outdoors.
151-200UnhealthyEveryone should reduce prolonged or heavy exertion outdoors; sensitive groups should avoid it and keep windows closed.
201-300Very UnhealthyHealth alert: everyone should avoid prolonged or heavy exertion outdoors, and sensitive groups should stay indoors.
301-500HazardousEmergency conditions: everyone should avoid all outdoor physical activity and stay indoors with filtered air if possible. The scale tops out at 500; heavier dust or smoke is shown as 500.

Values on this page are modelled by CAMS (Copernicus) and served by Open-Meteo; they are estimates for the area around the city centre, not readings from an official monitor.

Nearby cities

More for Việt Yên

Air quality elsewhere

Data: Open-Meteo Air Quality API, Copernicus Atmosphere Monitoring Service (CAMS), NASA FIRMS.