Air quality in Chomutov, Northwest, Czechia today
Mr. Duck’s Air Quality Score
Unhealthy for sensitive groups for Chomutov, Northwest, 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 Chomutov today falls into the USG category according to the Duck score assessment. The primary pollutant identified is PM2.5, with a measured concentration of 46.86 µg/m³ based on five valid observations from OpenAQ data.
No additional pollutants are highlighted for this period, and the available measurements focus solely on fine particulate matter. 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 Chomutov contains measurements from a single monitoring site that provides five separate data rows. All five pollutants are represented: PM1 at 29.389 µg/m³, PM2.5 at 46.856 µg/m³, relative humidity at 54.30 %, temperature at 7.91 °C and particle count (UM003) at 1498.74 particles/cm³. Each value comes from the same timestamp – 2026‑02‑10 18:00 UTC – and is flagged as updated within three days, indicating that the most recent observations are fresh.
Because every pollutant shares the identical minimum, median and maximum values, there is no observed spread in this snapshot; each metric reports a single point rather than a range. The uniformity suggests that the current record reflects one measurement moment rather than an aggregated period. With only one station contributing data, spatial coverage across Chomutov is limited, so conditions elsewhere in the city may differ from those captured here.
The freshness of the data is consistent across all pollutants, with no older or unknown timestamps present. However, the dataset’s narrow temporal depth – a single recent reading – means that trends or variability over time cannot be assessed from this snapshot alone. Users should keep in mind that while the figures are up‑to‑date for the moment recorded, they represent only one location and point in time within Chomutov.
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 Chomutov are based on five valid measurements and were refreshed recently, Updated within 3 days (last update: 2026‑02‑10T18:00:00+00:00). This snapshot reflects conditions at the time of sampling; air quality can vary across different neighbourhoods and times of day within the city.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| Servis-Chomutov.cz | pm1 | 29.38900003433228 | µg/m³ | 2026-02-10 18:00 UTC |
| Servis-Chomutov.cz | pm25 | 46.85550003051757 | µg/m³ | 2026-02-10 18:00 UTC |
| Servis-Chomutov.cz | relativehumidity | 54.2988333384196 | % | 2026-02-10 18:00 UTC |
| Servis-Chomutov.cz | temperature | 7.912000075976053 | c | 2026-02-10 18:00 UTC |
| Servis-Chomutov.cz | um003 | 1498.7365051269528 | particles/cm³ | 2026-02-10 18:00 UTC |