Air quality in Montpellier, Occitania, France today

Mr. Duck’s Air Quality Score

Good air today for Montpellier, Occitania, 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 Montpellier today is classified as Good. The primary pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 reference value of 8.2 and a PM10 reference value of 9.5, based on nine valid observations.

Data are shown via OpenAQ. 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 Montpellier includes measurements of five pollutants – nitrogen dioxide (NO₂), nitric oxide (NO), ozone (O₃), particulate matter 10 µm or less (PM10) and particulate matter 2.5 µm or less (PM2.5). These values come from 22 rows of observations collected at seven monitoring stations across the city, giving a modest spatial coverage that captures conditions in several neighbourhoods but does not represent every street corner.

Freshness varies by pollutant. The most recent readings for NO₂, PM10, PM2.5 and O₃ were all recorded on 2026‑02‑10 at 15:00 UTC, meaning they are less than three days old. In contrast, the latest NO value dates back to 2024‑03‑11 at 09:00 UTC, so it is considerably older than the other measurements. Overall, seven of the rows contain data that are “updated within 3 days,” while thirteen rows are classified as “old” and two fall into a “≤7 days” bucket; no rows are marked unknown.

The numbers show a wide spread for some pollutants. NO₂ values range from a minimum of –1.0 µg/m³ to a maximum of 427.8 µg/m³, with a median around 28 µg/m³ and the 10th‑percentile at 14.4 µg/m³, indicating occasional high spikes amid generally moderate levels. PM10 and PM2.5 are much tighter: PM10 varies between 6.9 and 28.8 µg/m³ (median ≈ 10.7 µg/m³), while PM2.5 spans 3.4 to 36.2 µg/m³ (median ≈ 6.0 µg/m³). Ozone is constant in this snapshot at 23.0 µg/m³, reflecting a single recent measurement.

Because the dataset contains both very recent and older entries, especially for NO, the picture of air quality can differ depending on which pollutant and time slice you look at. Conditions may change across neighbourhoods and over days, so the available data give a useful but incomplete view of Montpellier’s current atmospheric state.

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 dataset for Montpellier includes nine valid measurements and is updated within three days, with the most recent data recorded on 2026‑02‑10 at 15:00 UTC. These figures represent a snapshot of current conditions; however, air quality can differ across neighborhoods and change throughout the day, so local variations may not be captured in this summary.

OpenAQ station rows