Air quality

Air quality in Thành phố Sông Công today

Updated

Unhealthy for Sensitive Groups (US AQI 105) 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, 2:00 am (19:00 UTC).

Live AQI, PM2.5, PM10 and ozone for Thành phố Sông Công, Thai Nguyen, Vietnam, with a 48-hour forecast and the best time to be outside.

US AQI now
105 Unhealthy for Sensitive Groups
PM2.5
52 µg/m³ 3.5× WHO 24-h guideline
PM10
53 µg/m³
Ozone
74 µg/m³
Dominant pollutant
PM2.5 sub-index 105
Best hour today
2:00 pm AQI 111
European AQI
61

Open on the live map

Air quality in Thành phố Sông Công right now

Right now the modelled US Air Quality Index for Thành phố Sông Công, Thai Nguyen, Vietnam is 105, 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 105. 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 52 µg/m³, 3.5 times the WHO 24-hour guideline of 15 µg/m³; PM10 is 53 µg/m³ against a guideline of 45; ozone is 74 µg/m³ (below the WHO 8-hour level of 100); nitrogen dioxide is 25 µg/m³ (right at the 24-hour guideline of 25).

Also this hour: carbon monoxide 571 µg/m³.

Thành phố Sông Công AQI forecast: next 48 hours

Over the next 24 hours the AQI is forecast to range from 105 around Mon 2:00 am to 171 around Mon 6:00 pm, from "Unhealthy for Sensitive Groups" at best to "Unhealthy" at worst.

The following day is expected to be worse, averaging about 133 against 127 for the next 24 hours.

Local time (Asia/Ho_Chi_Minh)US AQICategoryPM2.5 µg/m³PM10 µg/m³Ozone µg/m³
Mon 2:00 am105Unhealthy for Sensitive Groups52.25374
Mon 5:00 am112Unhealthy for Sensitive Groups565760
Mon 8:00 am115Unhealthy for Sensitive Groups35.636102
Mon 11:00 am114Unhealthy for Sensitive Groups23.224181
Mon 2:00 pm111Unhealthy for Sensitive Groups2526195
Mon 5:00 pm166Unhealthy33.534165
Mon 8:00 pm158Unhealthy67.368114
Mon 11:00 pm120Unhealthy for Sensitive Groups79.68087
Tue 2:00 am134Unhealthy for Sensitive Groups87.38858
Tue 5:00 am140Unhealthy for Sensitive Groups59.46034
Tue 8:00 am140Unhealthy for Sensitive Groups27.52876
Tue 11:00 am138Unhealthy for Sensitive Groups19.420170
Tue 2:00 pm137Unhealthy for Sensitive Groups17.918160
Tue 5:00 pm133Unhealthy for Sensitive Groups18.519113
Tue 8:00 pm126Unhealthy for Sensitive Groups38.53950
Tue 11:00 pm119Unhealthy for Sensitive Groups57.65824
Wed 2:00 am111Unhealthy for Sensitive Groups62.96316

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 Thành phố Sông Công today

Between 6 am and 9 pm local time, the cleanest air today is forecast around 2:00 pm (AQI 111, Unhealthy for Sensitive Groups) and the worst around 6:00 pm (AQI 171). That is a swing of 60 points, so a run or walk around 2:00 pm is noticeably better.

Thành phố Sông Công vs the rest of Vietnam

Across 68 Vietnam cities we track, the average US AQI right now is 82 (Moderate). Thành phố Sông Công at 105 is 23 points worse than average.

It ranks 50 of 68 from cleanest to most polluted; the cleanest is Phu Quoc (38) and the most polluted Hạ Long (118).

For context, the median across 3,909 cities worldwide is 56.

Air quality in cities near Thành phố Sông Công

CityDistanceUS AQICategoryPM2.5 µg/m³
Thái Nguyên13 km105Unhealthy for Sensitive Groups52.2
Vĩnh Yên31 km95Moderate49.5
Việt Yên38 km109Unhealthy for Sensitive Groups66.4
Bắc Ninh40 km109Unhealthy for Sensitive Groups66.4
Bắc Giang43 km109Unhealthy for Sensitive Groups66.4
Tây Hồ46 km109Unhealthy for Sensitive Groups66.4
Bắc Từ Liêm47 km109Unhealthy for Sensitive Groups66.4
Việt Trì49 km95Moderate49.5

Model vs measured

We found no measured PM2.5 sensor cell within 25 km of Thành phố Sông Công, 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 90 µg/m³ in the next 24 hours while NASA satellites detected 151 fire hotspots within 300 km in the last day (nearest about 21 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 105, 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 Thành phố Sông Công

Air quality elsewhere

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