Air quality in Bắc Từ Liêm today

Air quality in Bắc Từ Liêm right now

Right now the modelled US Air Quality Index for Bắc Từ Liêm, Hanoi, Vietnam is 94, 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 94. 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 44 µg/m³, 2.9 times the WHO 24-hour guideline of 15 µg/m³; PM10 is 45 µg/m³ against a guideline of 45; ozone is 59 µg/m³ (below the WHO 8-hour level of 100); nitrogen dioxide is 35 µg/m³ (above the 24-hour guideline of 25).

Also this hour: carbon monoxide 722 µg/m³.

Bắc Từ Liêm AQI forecast: next 48 hours

Over the next 24 hours the AQI is forecast to range from 94 around Mon 1:00 am to 175 around Mon 6:00 pm, from "Moderate" at best to "Unhealthy" at worst.

The following day is expected to be worse, averaging about 158 against 123 for the next 24 hours.

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 Bắc Từ Liêm today

Between 6 am and 9 pm local time, the cleanest air today is forecast around 6:00 am (AQI 105, Unhealthy for Sensitive Groups) and the worst around 6:00 pm (AQI 175). That is a swing of 70 points, so a run or walk around 6:00 am is noticeably better.

Bắc Từ Liêm vs the rest of Vietnam

Across 68 Vietnam cities we track, the average US AQI right now is 82 (Moderate). Bắc Từ Liêm at 94 is 12 points worse than average.

It ranks 55 of 68 from cleanest to most polluted; the cleanest is Phu Quoc (38) and the most polluted Hạ Long (125).

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

Air quality in cities near Bắc Từ Liêm

Model vs measured

We found no measured PM2.5 sensor cell within 25 km of Bắc Từ Liêm, 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 92 µg/m³ in the next 24 hours while NASA satellites detected 127 fire hotspots within 300 km in the last day (nearest about 29 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.

• Wildfires near Bắc Từ Liêm
• Live wildfire map

Advice for sensitive groups

At 94, 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

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

• Air quality in Tây Hồ
• Air quality in Cầu Giấy
• Air quality in Ba Dinh
• Air quality in Thanh Xuân
• Air quality in Đống Đa
• Air quality in Hanoi
• Air quality in Hoàn Kiếm
• Air quality in Hai Bà Trưng

More for Bắc Từ Liêm

• Weather warnings
• Wildfires near Bắc Từ Liêm
• Earthquakes near you
• Aurora forecast
• Planes overhead
• Live cameras
• Live wildfire map

Air quality elsewhere

• Air quality in Vietnam
• Air quality worldwide