Air quality in Linz, Upper Austria, Austria today

Mr. Duck’s Air Quality Score

Moderate air today for Linz, 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 Linz, Upper Austria is currently classified as Moderate. According to the latest assessment, the primary pollutant is PM2.5. The most recent measurements indicate a PM2.5 concentration of 21.01795 µg/m³ and a PM10 concentration of 32.1057549 µg/m³. These figures are derived from eleven valid measurements collected across the city. In the classification used, Moderate is the middle tier between Good and Unhealthy. PM2.5 refers to fine particles with diameters of 2.5 micrometers or less, and PM10 includes particles up to 10 micrometers in size. Both values are expressed in micrograms per cubic meter.

Data is shown via OpenAQ. 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 Linz air‑quality feed contains 42 individual rows drawn from eight monitoring sites. For this city the dataset provides concentration values for carbon monoxide (CO), nitrogen monoxide (NO), nitrogen dioxide (NO₂), ozone (O₃), particulate matter of 1 µm (PM₁), 2.5 µm (PM₂.₅) and 10 µm (PM₁₀) fractions, and sulfur dioxide (SO₂). The broader OpenAQ schema also includes relative humidity, temperature and the UM003 parameter, but none of the current rows report those three variables.

Across all pollutants the timestamps show a mixed picture of freshness. Fourteen rows have been refreshed within the last three days, while eighteen rows are classified as old and ten have an unknown update time. For most of the measured species – NO₂, PM₁₀, PM₂.₅, CO, O₃ and SO₂ – the most recent reading comes from 2026‑02‑10 20:00 UTC. The NO data are older, last updated on 2024‑03‑11 12:00 UTC, and the single PM₁ entry lacks a timestamp altogether.

The numeric spread highlights the variability captured by the network. NO₂ concentrations range from –1.0 to 37 µg/m³ with a median of about 25.7 µg/m³; PM₁₀ varies between 13 and 32.1 µg/m³, median 22 µg/m³; PM₂.₅ spans 9.8 to 34.8 µg/m³, median roughly 19.3 µg/m³. CO values sit between 310 and 464 µg/m³, median 349 µg/m³, while NO shows a broader spread from 1.6 to 29.5 µg/m³, median 15.7 µg/m³. O₃ ranges from 2 to 34.8 µg/m³ (median 22.3 µg/m³) and SO₂ from 0.63 to 3.23 µg/m³ (median 3.21 µg/m³). PM₁ is represented by a single measurement of 21.9 µg/m³, so its distribution cannot be described. These figures illustrate that the dataset captures a fairly wide range of conditions for most pollutants, but coverage is uneven, with some parameters recorded only sporadically or not at all, meaning city‑wide conditions can differ by location and time.

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 Linz includes 11 valid measurements and is updated within 3 days, with the latest update recorded on 2026-02-10 at 20:00 UTC. These values represent a recent snapshot of ambient conditions across the city. Please note that air quality can vary by location and time within the city, so individual experiences may differ from the reported figures.

OpenAQ station rows