Air quality in Sylt, Schleswig-Holstein, Germany today

Mr. Duck’s Air Quality Score

Moderate air today for Sylt, 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 Sylt today is classified as Moderate. The primary pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 concentration of 32.53 µg/m³ and a PM10 level of 33.86 µg/m³, based on five valid observations recorded via OpenAQ.

These values 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 data set for Sylt in Schleswig‑Holstein contains measurements for six pollutants – nitrogen monoxide (NO), nitrogen dioxide (NO₂), ozone (O₃), particulate matter 10 µm or less (PM₁₀), particulate matter 2.5 µm or less (PM₂.₅) and sulphur dioxide (SO₂). All values come from a single monitoring location in Westerland, represented by 11 rows of observations. The most recent updates are generally very fresh: NO₂, O₃ and SO₂ were last recorded on 2026‑02‑10 at 18:00 UTC, while the particulate matter series (PM₁₀ and PM₂.₅) were refreshed on 2026‑02‑09 at 18:00 UTC. The only older entry is NO, which dates back to 2024‑03‑11 at 11:00 UTC and therefore does not reflect current conditions.

Across the recent period the measured concentrations show a modest spread. For NO₂ the values range from a low of 2.99 µg/m³ to a high of 8.18 µg/m³, with a median around 5.6 µg/m³; O₃ varies between 36.09 and 79.05 µg/m³, centred near 57.6 µg/m³. Particulate matter exhibits the widest relative range: PM₁₀ runs from 6.48 to 33.86 µg/m³ (median 20.2) and PM₂.₅ from 3.53 to 32.53 µg/m³ (median 18.0). SO₂ is consistently low, staying between 0.23 and 0.5 µg/m³ with a median of 0.365 µg/m³.

Because the dataset relies on a single station, spatial variation across Sylt cannot be captured; conditions may differ in other parts of the island or at different times of day. The overall picture is that most pollutants have recent data, but the coverage is limited to one location and the NO measurement is outdated, so any snapshot should be interpreted as representative only for Westerland at the recorded timestamps.

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 Sylt are based on five valid measurements and were refreshed recently, having been updated within three days (last update 2026‑02‑10T18:00:00+00:00). This snapshot reflects the conditions recorded at that time; air quality can differ across neighbourhoods and change throughout the day, so values may not represent every location or moment in the city.

OpenAQ station rows