Air quality in Flensburg, Schleswig-Holstein, Germany today

Mr. Duck’s Air Quality Score

Good air today for Flensburg, Schleswig-Holstein, Germany

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

Measurements show a PM2.5 reference value of 0.0 and a PM10 reference value of 30.303, based on eight valid observations recorded via OpenAQ. This indicates that the concentrations of these particulate matter fractions are within the limits associated with the Good category.

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 Flensburg air‑quality feed contains data for seven measured variables – nitrogen dioxide (NO₂), fine particulate matter (PM2.5), coarse particulate matter (PM10), ultrafine particles (PM1), relative humidity, temperature and the particle count UM003. All of these come from a single monitoring station that contributed eight rows of observations in the latest download.

The most recent values are all very fresh, with timestamps ranging from 2026‑02‑10 18:00 UTC for NO₂, PM10 and PM1 to 2026‑02‑10 19:00 UTC for PM2.5, relative humidity, temperature and UM003. This means the newest data are no older than a few hours at the time of writing. However, because only one station is represented, spatial coverage across the city is limited; conditions can differ in neighborhoods that are not directly sampled.

Looking at the numbers, NO₂ was recorded at a single value of 22.852 µg/m³, while PM10 showed a solitary measurement of 30.303 µg/m³. Both pollutants have no observed variation – their minimum, median and maximum are identical. In contrast, PM2.5 exhibits a broader spread: values range from 0.0 to 23.088 µg/m³ with a median of 11.544 µg/m³, indicating some variability within the limited dataset. Relative humidity and temperature each have one precise reading (41.025 % and 22.55 °C respectively), and UM003 reports a constant particle concentration of about 12.65 particles/cm³. The presence of zero values for PM1 and the low‑range PM2.5 data suggest that ultrafine particle levels are currently minimal at this location, but the single‑station setup means these figures may not reflect citywide conditions.

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 Flensburg reflects eight valid measurements and is updated within 3 days, with the latest values recorded on 2026‑02‑10 at 19:00 UTC. This snapshot provides a current overview of air quality across the city, but conditions can differ by specific neighbourhoods and change throughout the day, so local variations may not be captured in these figures.

OpenAQ station rows