Air quality

Air quality in Thị Trấn Đại Từ today

Updated

Moderate (US AQI 98) Acceptable for most people. Unusually sensitive people should consider shortening long or heavy exertion outdoors. Model estimate for Mon, Oct 26, 4:00 am (21:00 UTC).

Live AQI, PM2.5, PM10 and ozone for Thị Trấn Đại Từ, Thai Nguyen, Vietnam, with a 48-hour forecast and the best time to be outside.

US AQI now
98 Moderate
PM2.5
55 µg/m³ 3.6× WHO 24-h guideline
PM10
56 µg/m³
Ozone
63 µg/m³
Dominant pollutant
PM2.5 sub-index 98
Best hour today
6:00 am AQI 103
European AQI
62

Open on the live map

Air quality in Thị Trấn Đại Từ right now

Right now the modelled US Air Quality Index for Thị Trấn Đại Từ, Thai Nguyen, Vietnam is 98, which falls in the "Moderate" band (up to 100). Acceptable for most people. Unusually sensitive people should consider shortening long or heavy exertion outdoors.

The index is driven mainly by PM2.5, whose own sub-index is 98. 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 55 µg/m³, 3.6 times the WHO 24-hour guideline of 15 µg/m³; PM10 is 56 µg/m³ against a guideline of 45; ozone is 63 µg/m³ (below the WHO 8-hour level of 100); nitrogen dioxide is 24 µg/m³ (below the 24-hour guideline of 25).

Also this hour: sulphur dioxide at 41 µg/m³, carbon monoxide 485 µg/m³.

Thị Trấn Đại Từ AQI forecast: next 48 hours

Over the next 24 hours the AQI is forecast to range from 98 around Mon 4:00 am to 166 around Mon 6:00 pm, from "Moderate" at best to "Unhealthy" at worst.

The following day looks similar, averaging about 123.

Local time (Asia/Ho_Chi_Minh)US AQICategoryPM2.5 µg/m³PM10 µg/m³Ozone µg/m³
Mon 4:00 am98Moderate54.75663
Mon 7:00 am105Unhealthy for Sensitive Groups54.85669
Mon 10:00 am111Unhealthy for Sensitive Groups24.926161
Mon 1:00 pm110Unhealthy for Sensitive Groups22.823196
Mon 4:00 pm149Unhealthy for Sensitive Groups29.930171
Mon 7:00 pm163Unhealthy55.256130
Mon 10:00 pm126Unhealthy for Sensitive Groups59.560116
Tue 1:00 am121Unhealthy for Sensitive Groups57.958103
Tue 4:00 am123Unhealthy for Sensitive Groups50.85195
Tue 7:00 am121Unhealthy for Sensitive Groups49.55069
Tue 10:00 am121Unhealthy for Sensitive Groups23.624154
Tue 1:00 pm120Unhealthy for Sensitive Groups2020169
Tue 4:00 pm123Unhealthy for Sensitive Groups18.319152
Tue 7:00 pm128Unhealthy for Sensitive Groups45.84691
Tue 10:00 pm115Unhealthy for Sensitive Groups87.88848
Wed 1:00 am126Unhealthy for Sensitive Groups103.810448
Wed 4:00 am139Unhealthy for Sensitive Groups79.68036

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 Thị Trấn Đại Từ today

Between 6 am and 9 pm local time, the cleanest air today is forecast around 6:00 am (AQI 103, Unhealthy for Sensitive Groups) and the worst around 6:00 pm (AQI 166). That is a swing of 63 points, so a run or walk around 6:00 am is noticeably better.

Thị Trấn Đại Từ vs the rest of Vietnam

Across 68 Vietnam cities we track, the average US AQI right now is 84 (Moderate). Thị Trấn Đại Từ at 98 is 14 points worse than average.

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

Air quality in cities near Thị Trấn Đại Từ

CityDistanceUS AQICategoryPM2.5 µg/m³
Thái Nguyên22 km110Unhealthy for Sensitive Groups58.4
Thành phố Sông Công27 km110Unhealthy for Sensitive Groups58.4
Vĩnh Yên36 km99Moderate59.3
Việt Trì42 km99Moderate59.3
Sơn Tây56 km99Moderate59.3
Bắc Từ Liêm64 km115Unhealthy for Sensitive Groups63.8
Tây Hồ65 km115Unhealthy for Sensitive Groups63.8
Việt Yên66 km115Unhealthy for Sensitive Groups63.8

Model vs measured

We found no measured PM2.5 sensor cell within 25 km of Thị Trấn Đại Từ, 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 61 µg/m³ in the next 24 hours while NASA satellites detected 157 fire hotspots within 300 km in the last day (nearest about 39 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 98, most people are fine outdoors. If you are unusually sensitive to PM2.5, keep long or intense workouts to the cleaner hours shown above.

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 Thị Trấn Đại Từ

Air quality elsewhere

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