Air quality in Steyr, Upper Austria, Austria today

Mr. Duck’s Air Quality Score

Moderate air today for Steyr, Upper Austria, Austria

⚠️ 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 Steyr, Upper Austria, is currently classified as Moderate. The primary pollutant identified is PM2.5. Five valid measurements contribute to this assessment.

Measured concentrations show a PM2.5 level of 18.5 µg/m³ and a PM10 level of 24.0 µg/m³, as reported by OpenAQ. The reported PM2.5 figure of 18.5 µg/m³ represents the reference concentration used in the evaluation, while the PM10 reference is 24.0 µg/m³. These concentrations are derived from the five recent valid observations collected for the city. Data is shown via OpenAQ, which aggregates measurements from participating monitoring stations. No additional pollutants dominate the current profile. 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 Steyr in Upper Austria contains measurements for six pollutants – nitrogen monoxide (NO), nitrogen dioxide (NO₂), ozone (O₃), particulate matter ≤ 10 µm (PM10), particulate matter ≤ 2.5 µm (PM2.5) and sulphur dioxide (SO₂). All values come from a single monitoring site, Steyr Münichholz, and are recorded in 11 rows of data. Five of those rows have been updated within the last three days, while the remaining six are older. The most recent timestamps for NO₂, O₃, PM10, PM2.5 and SO₂ are all from 2026‑02‑10 20:00 UTC, whereas the NO measurement dates back to 2024‑03‑11 12:00 UTC, indicating that recent information for NO is not available.

Across the recent data the observed ranges vary considerably. NO₂ spans from 3.68 µg/m³ up to 27.98 µg/m³ with a median of 15.83 µg/m³, showing a moderate spread. O₃ exhibits the greatest variability, ranging from a low of 3.593 µg/m³ to a high of 106.98 µg/m³ and a median of 55.29 µg/m³, suggesting that ozone levels can change sharply over short periods. Particulate matter is more tightly clustered: PM10 values lie between 11.81 µg/m³ and 24.00 µg/m³ (median 17.90 µg/m³) and PM2.5 between 4.32 µg/m³ and 18.51 µg/m³ (median 11.42 µg/m³). SO₂ is the least variable, ranging from 1.44 µg/m³ to 2.17 µg/m³ with a median of 1.80 µg/m³.

The coverage is therefore uneven: while most pollutants have several recent observations, NO is represented only by a single older value, and half of the rows are older than three days. Because the data come from one location, conditions elsewhere in Steyr may differ, and the mix of fresh and dated rows should be kept in mind when interpreting the current air‑quality picture.

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 Steyr includes five valid measurements and is updated within 3 days. The latest values were recorded on 2026-02-10 at 20:00 UTC. This snapshot reflects conditions at the time of sampling, but air quality can vary by location and time within the city. Users should consider this when interpreting the figures.

OpenAQ station rows