Air quality in Tours, Centre-Val de Loire, France today

Mr. Duck’s Air Quality Score

Good air today for Tours, Centre-Val de Loire, France

⚠️ 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 Tours today is classified as Good. The primary pollutant identified is PM2.5 (fine particles).

Measurements from six valid monitoring stations show a PM2.5 reference value of 1.4 and a PM10 reference value of 2.3. These figures reflect the current concentrations recorded across the city. 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 Tours includes measurements of carbon monoxide (CO), nitrogen oxide (NO), nitrogen dioxide (NO₂), particulate matter ≤ 10 µm (PM₁₀) and particulate matter ≤ 2.5 µg (PM₂.₅). In total 13 rows of data have been collected from four monitoring stations across the city. The most recent observations are fairly current for three pollutants: NO₂, PM₁₀ and PM₂.₅ were all last updated on 2026-02-10 15:00 UTC, while NO was recorded more recently than a year ago (2024-03-11 09:00 UTC). CO is the oldest entry, dating back to 2022-04-04 10:00 UTC, and no fresh values are available for it.

Across the recent data the measured concentrations show a wide spread. For NO₂ the minimum recorded value is 5.18 µg/m³, the median sits at 8.07 µg/m³ and the maximum reaches 26.6 µg/m³; the 10th‑percentile is about 5.31 µg/m³ while the 90th‑percentile climbs to 21.77 µg/m³. PM₁₀ ranges from 2.3 µg/m³ up to 26.0 µg/m³, with a median of 14.77 µg/m³ and a 10th‑percentile of 5.80 µg/m³. PM₂.₅ values vary between 1.4 µg/m³ and 28.6 µg/m³, the median is 15.0 µg/m³ and the 90th‑percentile reaches 25.88 µg/m³. NO shows a broader interval, from 4.5 µg/m³ to 43.3 µg/m³, with a median of 23.9 µg/m³; its 10th‑percentile is 8.38 µg/m³ and the 90th‑percentile is 39.42 µg/m³. CO has a single reported value of 35.0 µg/m³ from the Pompidou station.

The coverage is uneven: four stations contribute data, but only three pollutants have recent updates, while CO relies on a solitary older measurement. Consequently, the snapshot reflects current conditions for NO₂, PM₁₀ and PM₂.₅, but offers limited insight into carbon monoxide trends and only a year‑old view of nitrogen oxide. Users should keep in mind that air quality can differ across neighbourhoods and over time, especially where data are sparse or outdated.

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 Tours reflects six valid measurements and is updated within three days, with the latest values recorded on 10 February 2026 at 15:00 UTC. While this snapshot provides a current overview of city‑wide air quality, conditions can differ across neighborhoods and change throughout the day, so local variations may not be captured in these figures.

OpenAQ station rows