Air quality in Ulm, Baden-Württemberg, Germany today

Mr. Duck’s Air Quality Score

Moderate air today for Ulm, Baden-Württemberg, 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 Ulm today is classified as Moderate. The primary pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 reference value of 17.0 and a PM10 reference value of 19.9, based on four valid observations recorded via OpenAQ.

Data are presented for informational purposes only; 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 Ulm air‑quality dataset contains observations for nine measured substances: carbon monoxide (CO), nitrogen oxide (NO), nitrogen dioxide (NO2), ozone (O3), particulate matter of 1 µm, 2.5 µm and 10 µm diameter (PM1, PM2.5, PM10), sulfur dioxide (SO₂) and relative humidity and temperature, although the latter two are not reported as numeric values in the current feed. The data come from a total of twelve rows across two monitoring stations, but the completeness varies widely among pollutants. For PM10 the most recent reading is 19.9 µg/m³ recorded on 2026‑02‑10 at 17:00 UTC; for PM2.5 the latest value is 17.0 µg/m³ from the same timestamp. Both fine‑particle metrics show a modest spread, with minimums of 8.9 µg/m³ (PM10) and 7.6 µg/m³ (PM2.5) and median values around 14.4 µg/m³ and 12.3 µg/m³ respectively, indicating that recent measurements capture a relatively narrow range.

In contrast, CO, NO, NO₂, O₃ and SO₂ are represented by single historic entries. The CO value of 400.0 µg/m³ dates back to 2017‑01‑11, while the NO reading of 2.4 µg/m³ is from 2024‑03‑11. Both nitrogen oxides and ozone each have a solitary recent entry (24.187 µg/m³ for NO₂ and 24.097 µg/m³ for O₃, recorded on 2026‑02‑10 at 17:00 UTC). Sulfur dioxide is also only available from an old record dated 2017‑01‑06 with a value of 2.0 µg/m³. PM1 lacks any identifiable station name or timestamp, so no concrete figure can be reported.

Overall the freshest data are the fine‑particle and ozone measurements from early February 2026, while several key gases rely on older observations or have unknown update times. This uneven temporal coverage means that current city‑wide conditions may differ across locations and pollutants, especially for those substances where only dated or missing entries exist.

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 Ulm are based on four valid measurements and were refreshed recently, with the latest update recorded at 2026‑02‑10T17:00:00+00:00 (updated within 3 days). These values represent a snapshot of ambient conditions across the monitoring network; air quality can differ by specific location and time of day within the city, so individual experiences may vary.

OpenAQ station rows