Air quality in Pilsen, Czechia today

Mr. Duck’s Air Quality Score

Good air today for Pilsen, 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 Pilsen today is classified as Good. According to the latest OpenAQ data, the primary pollutant is PM2.5. The measured concentration of PM2.5 is 7.5 micrograms per cubic metre, and the PM10 concentration is 4.7 micrograms per cubic metre. These figures are derived from ten valid measurements taken across the city.

All reported values fall within the reference limits provided for each particle size. The dataset is presented through OpenAQ, which aggregates observations from participating monitoring stations. The current snapshot reflects conditions at the time of measurement and does not imply any change over time. 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 Pilsen pulls together 34 individual measurement rows collected from six monitoring stations and covers seven key pollutants: carbon monoxide (CO), nitrogen monoxide (NO), nitrogen dioxide (NO₂), ozone (O₃), particulate matter ≤ 10 µm (PM₁₀), particulate matter ≤ 2.5 µm (PM₂.₅) and sulfur dioxide (SO₂). For each pollutant the most recent reading is recorded with a timestamp, a unit of micrograms per cubic metre and the station where it was taken. The latest values are NO₂ at 2.5 µg/m³, PM₁₀ at 4.7 µg/m³, PM₂.₅ at 7.5 µg/m³, SO₂ at 3.7 µg/m³, NO at 8.0 µg/m³, CO at 47.0 µg/m³ and O₃ at 56.7 µg/m³, all reported in UTC (2026‑02‑10 14:00, 2024‑03‑11 10:00 and 2025‑12‑08 14:00 respectively).

Overall freshness shows that ten of the rows have been updated within the last 30 days, while the remaining twenty‑four are classified as old. Most pollutants – NO₂, PM₁₀, PM₂.₅, SO₂ and O₃ – have their latest measurements dated 10 February 2026, indicating recent coverage. In contrast, NO and CO rely on older entries from March 2024 and December 2025, so their current conditions are less well captured. The number of rows per pollutant varies: six rows each for NO₂, PM₁₀, PM₂.₅, SO₂ and O₃, four rows for NO and three rows for CO.

The numeric spread highlights typical conditions and variability. NO₂ values range from 2.5 to 20.3 µg/m³ with a median of 14.05, while PM₁₀ spans 4.7 to 25.9 µg/m³ (median 15.0) and PM₂.₅ from 7.5 to 26.0 µg/m³ (median 11.65). SO₂ shows a narrower band of 1.3 to 10.1 µg/m³ (median 3.85). Ozone levels vary between 17.0 and 56.7 µg/m³ (median 33.5). NO and CO exhibit broader ranges relative to their few rows, with CO from 47.0 up to 757.0 µg/m³ (median 308) and NO from 1.6 to 8.0 µg/m³ (median 3.35). These figures illustrate that while most pollutants have recent, multi‑station coverage, the dataset for NO and CO is sparser and older, meaning city‑wide air quality snapshots for those gases may be less current.

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 Pilsen includes ten valid measurements and is updated within 30 days. The latest data were recorded on 2026-02-10 at 14:00 UTC. These values represent a snapshot of ambient conditions and should be interpreted accordingly. Air quality can vary by location and time within the city, so individual experiences may differ from the reported figures.

OpenAQ station rows