Air quality in Olomouc, Central Moravia, Czechia today

Mr. Duck’s Air Quality Score

Moderate air today for Olomouc, Central Moravia, Czechia

⚠️ 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 Olomouc today is classified as Moderate. The primary pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 concentration of 14.8 µg/m³ and a PM10 level of 28.9 µg/m³, based on three valid observations.

Data are 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 air‑quality record for Olomouc draws on nine data rows collected at three monitoring sites, covering the four pollutants that are reported in this view: nitrogen monoxide (NO), nitrogen dioxide (NO₂), particulate matter ≤ 10 µm (PM₁₀) and particulate matter ≤ 2.5 µm (PM₂.₅). For PM₁₀ the most recent measurement is 28.9 µg/m³ recorded at Olomouc‑Hejcin on 2026‑02‑10 14:00 UTC; the values in the set range from a low of 14.0 to a high of 28.9, with a median of 15.0 and the central 80 % falling between about 14.2 and 26.1 µg/m³. PM₂.₅ shows a tighter spread: the latest figure is 14.8 µg/m³ (Olomouc‑Hejcin, 2026‑02‑10 14:00 UTC), with observations ranging from 9.0 to 14.8, a median of 13.0 and an 80 % interval roughly between 9.8 and 14.44 µg/m³. NO₂’s newest reading is 17.6 µg/m³ (Olomouc‑Hejcin, 2026‑02‑10 14:00 UTC); the recorded range runs from 13.6 to 17.6, median 15.6 and an 80 % band from about 14.0 to 17.2 µg/m³. The NO data are older, with a single value of 2.0 µg/m³ (Olomouc‑Hejcin, 2024‑03‑11 10:00 UTC) that is both the minimum and maximum in its series.

Overall, three of the four pollutants have measurements updated within the last three days, indicating fairly fresh coverage for PM₁₀, PM₂.₅ and NO₂. In contrast, NO data are dated by almost two years, so recent conditions for this gas are not reflected in the current set. The dataset includes a modest number of rows—nine overall—but the spread of values shows that particulate matter exhibits more variability than nitrogen oxides, while the nitrogen oxide measurements are limited to a single recent point each. Because the station network is small and some data are older, the snapshot may not capture all spatial or temporal fluctuations across Olomouc at any given moment.

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 for Olomouc in Central Moravia is based on three valid measurements and was updated within 3 days, with the latest refresh recorded at 2026‑02‑10T14:00:00+00:00. This snapshot reflects conditions at a specific time and place; air quality can differ across neighborhoods and change throughout the day, so values shown may not represent current or city‑wide levels.

OpenAQ station rows