Air quality in Palaiseau, Ile-de-France, France today

Mr. Duck’s Air Quality Score

Good air today for Palaiseau, Ile-de-France, 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 Palaiseau today is classified as Good. The main pollutant identified is PM2.5, with a measured concentration of approximately 3.86 µg/m³ based on five valid observations reported through OpenAQ.

Overall conditions are within the Good category and no additional pollutants exceed reporting thresholds. 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 air‑quality record for Palaiseau comes from a single monitoring site that supplies six separate pollutant measurements. All of the data points are drawn from just one station, so the picture reflects conditions at that specific location rather than the whole city. For five of the pollutants – PM1, PM2.5, relative humidity, temperature and particle count (UM003) – the most recent reading was taken on 2026‑02‑10 at 18:00 UTC, meaning the values are less than two days old. The PM10 measurement is older, with its latest entry dated 2025‑01‑13 at 23:00 UTC, so that figure does not reflect current conditions.

The available concentrations are very precise because each pollutant has only a single recorded value. PM1 stands at 2.41 µg/m³, while PM2.5 is 3.86 µg/m³; both are identical to their median and percentile values, indicating no observed variation in the limited dataset. PM10 shows a much higher level of 50.35 µg/m³, again with no spread because only one reading exists. Relative humidity was recorded at 77.22 % and temperature at 12.96 °C, each matching their minimum, median and maximum values. The particle counter (UM003) reported 582.93 particles per cubic centimetre, also without any range.

Because the dataset consists of a single row per pollutant, there is no information on how these values change over time or across different neighbourhoods in Palaiseau. The freshness of most measurements is good, but the outdated PM10 reading highlights an uneven coverage that can limit insight into current fine‑dust levels. Users should keep in mind that conditions may differ elsewhere in the city and at other times, given the narrow spatial and temporal scope of the available data.

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 Palaiseau includes five valid measurements and was refreshed recently, with the latest update recorded on 2026‑02‑10 at 18:00 UTC; it is therefore considered updated within three days. While these figures give a current snapshot of air quality, conditions can differ across neighborhoods and change throughout the day, so this information reflects only a brief moment in time for the city.

OpenAQ station rows