Air quality in Liberec, Northeast, Czechia today
Mr. Duck’s Air Quality Score
Moderate air today for Liberec, Northeast, Czechia
This friendly indicator summarizes the latest city readings. For health guidance, please see: EPA AirNow or WHO.
Air quality today
The air quality in Liberec today is classified as Moderate. The primary pollutant measured is PM2.5 (fine particles). According to the latest data, the PM2.5 concentration is 9.7 µg/m³ and the accompanying PM10 level stands at 15.4 µg/m³, based on five valid measurements reported through OpenAQ.
These values reflect the current monitoring snapshot 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 Liberec air‑quality dataset contains measurements for six common pollutants – nitrogen monoxide (NO), nitrogen dioxide (NO₂), ozone (O₃), particulate matter 10 µm or less (PM₁₀), fine particulate matter 2.5 µm or less (PM₂.₅) and sulfur dioxide (SO₂). All of these values come from a single monitoring site, Liberec‑Rochlice, so the dataset comprises six rows in total. Because there is only one station feeding data, spatial coverage across the city is limited to that location.
The timestamps show a mixed picture of freshness. The most recent updates for NO₂, O₃, PM₁₀, PM₂.₅ and SO₂ were recorded on 2026‑02‑10 at 14:00 UTC, indicating very current information for those five pollutants. In contrast, the NO measurement is older, last updated on 2024‑03‑11 at 10:00 UTC, which means that particular value reflects conditions from almost two years ago. Consequently, while most pollutant readings are up‑to‑date, the dataset does contain one outdated entry.
Across the six pollutants the recorded concentrations are identical to their median values because each series contains a single observation. NO is measured at 5.9 µg/m³, NO₂ at 4.2 µg/m³, O₃ at 41.9 µg/m³, PM₁₀ at 15.4 µg/m³, PM₂.₅ at 9.7 µg/m³ and SO₂ at 3.5 µg/m³. With only one data point per pollutant there is no spread to report; the minimum, median and maximum are all the same. This lack of variability means the dataset cannot illustrate fluctuations over time or differences between locations within Liberec, so users should keep in mind that actual city‑wide conditions may differ from what is captured at the Rochlice site.
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 Liberec are based on five valid measurements and were updated within three days, with the latest refresh recorded at 2026‑02‑10 14:00 UTC. This snapshot reflects conditions at that specific time; air quality can vary across different neighborhoods and moments throughout the day, so values may differ from what you experience elsewhere in the city.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| Liberec-Rochlice | no | 5.9 | µg/m³ | 2024-03-11 10:00 UTC |
| Liberec-Rochlice | no2 | 4.2 | µg/m³ | 2026-02-10 14:00 UTC |
| Liberec-Rochlice | o3 | 41.9 | µg/m³ | 2026-02-10 14:00 UTC |
| Liberec-Rochlice | pm10 | 15.4 | µg/m³ | 2026-02-10 14:00 UTC |
| Liberec-Rochlice | pm25 | 9.7 | µg/m³ | 2026-02-10 14:00 UTC |
| Liberec-Rochlice | so2 | 3.5 | µg/m³ | 2026-02-10 14:00 UTC |