Air quality in Tournai, Hainaut, Belgium today

Mr. Duck’s Air Quality Score

Good air today for Tournai, Hainaut, Belgium

⚠️ This website is currently under active development. Some data may be incomplete or temporarily inaccurate. For health-critical decisions, please verify information through official government or environmental sources.

Categories follow US EPA AQI breakpoints for PM (estimate from latest valid measurements; this project does not compute EPA NowCast/24-hour AQI yet).

This friendly indicator summarizes the latest city readings. For health guidance, please see: EPA AirNow or WHO.

Air quality today

The air quality in Tournai today is classified as Good. The main pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 value of 0.719 and a PM10 value of 4.271, based on four valid observations collected via OpenAQ.

Overall conditions meet the criteria for a Good rating according to the current assessment. This page is informational; for health guidance, use official sources such as EPA AirNow or WHO.

Latest sensor values

PM categories follow US EPA AQI breakpoints, shown here as an estimate derived from the latest valid measurements (this project does not compute EPA NowCast/24-hour AQI yet).

What the data includes

The dataset for Tournai includes measurements of six key pollutants – carbon monoxide (CO), nitrogen dioxide (NO₂, written as NO2), ozone (O₃, written as O3), particulate matter 10 µm or less (PM10), particulate matter 2.5 µm or less (PM2.5, written as PM25) and sulphur dioxide (SO₂). All values come from a single monitoring station, giving a total of six data rows in the current feed.

The most recent observations are fairly fresh for most gases: NO₂, O₃, PM10 and PM2.5 were all recorded on 2026‑02‑10 at 18:00 UTC, while CO’s last entry dates to 2026‑01‑04 at 02:00 UTC and SO₂ was last logged on 2026‑01‑14 at 08:00 UTC. This means that for four of the six pollutants the data are less than three days old, whereas carbon monoxide and sulphur dioxide are older by about a month.

Across the six rows the values show virtually no variation – each pollutant has a single reported figure that also serves as its minimum, median and maximum. CO is measured at 195.0 µg/m³, NO₂ at 11.5 µg/m³, O₃ at 59.5 µg/m³, PM10 at 4.271 µg/m³, PM2.5 at 0.719 µg/m³ and SO₂ at 1.0 µg/m³. Because the dataset contains only one station, spatial coverage within Tournai is limited; conditions elsewhere in the city may differ from these point measurements, especially given the older timestamps for CO and SO₂.

Learn more about sources and filtering: About the data.

Trusted references: WHO (Air pollution) · US EPA AirNow · European Environment Agency (Air)

Latest sensor values (bars)

PM categories follow US EPA AQI breakpoints, shown here as an estimate derived from the latest valid measurements (this project does not compute EPA NowCast/24-hour AQI yet).

Data notes

The data shown for Tournai are based on four valid measurements and have been updated within three days, with the latest refresh recorded at 2026‑02‑10 18:00 UTC. This snapshot reflects conditions at the time of collection; air quality can vary across different neighbourhoods and moments throughout the city, so values may differ from what you experience locally.

OpenAQ station rows