Air quality in Mont-de-Marsan, Nouvelle-Aquitaine, France today

Mr. Duck’s Air Quality Score

Good air today for Mont-de-Marsan, Nouvelle-Aquitaine, 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 Mont‑de‑Marsan today is classified as Good. The primary pollutant measured is PM2.5, with a reference concentration of 5.4 µg/m³, while the corresponding PM10 value stands at 8.1 µg/m³ based on four valid observations.

Data are shown via OpenAQ and reflect the current monitoring results for 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 Mont‑de‑Marsan air‑quality dataset contains measurements for five pollutants: nitrogen monoxide (NO), nitrogen dioxide (NO₂), ozone (O₃), particulate matter ≤ 10 µm (PM10) and particulate matter ≤ 2.5 µm (PM2.5). The data come from nine individual rows recorded at two monitoring stations, all located at the “MONT‑DE‑MARSAN – MIDOUZE” site.

Freshness varies across the pollutants. The most recent NO reading dates back to 2024‑03‑11 07:00 UTC, while the latest values for NO₂, PM10, PM2.5 and O₃ were all updated on 2026‑02‑10 15:00 UTC, indicating that four of the five pollutants have very recent data (within the last three days). The older timestamp for NO means that its information is less current than the rest.

Across the available records, each pollutant shows a modest range. NO values span from 0.7 to 5.9 µg/m³ with a median of about 3.3 µg/m³; NO₂ ranges between 6.9 and 12.9 µg/m³ (median ≈ 9.9 µg/m³); PM10 varies from 8.1 to 18.5 µg/m³ (median ≈ 13.3 µg/m³); PM2.5 is recorded between 3.0 and 5.4 µg/m³ (median ≈ 4.2 µg/m³); O₃ has a single reported value of 48.9 µg/m³, so no spread can be assessed for that pollutant.

The dataset therefore provides recent coverage for most pollutants but is limited to a single location and a small number of rows. Because the observations are confined to one monitoring point, conditions elsewhere in Mont‑de‑Marsan may differ from those captured here, especially for NO where the latest measurement is over two years old.

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 current dataset for Mont‑de‑Marsan is based on four valid measurements and was updated within three days, with the latest refresh recorded at 2026‑02‑10T15:00:00+00:00. These figures represent a snapshot of conditions at the time of collection; air quality can differ across neighborhoods and change throughout the day, so values may not reflect every location or moment in the city.

OpenAQ station rows