Air quality in Västerås, Sweden today
Mr. Duck’s Air Quality Score
Moderate air today for Västerås, Sweden
This friendly indicator summarizes the latest city readings. For health guidance, please see: EPA AirNow or WHO.
Air quality today
The air quality in Västerås is currently classified as Moderate. The primary pollutant identified is PM10, with a measured reference value of 138.1 µg/m³ based on four valid observations recorded by OpenAQ.
These figures reflect the present monitoring results 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 air‑quality data for Västerås currently includes measurements of nitrogen dioxide (NO2) and particulate matter up to 10 µm in diameter (PM10). Both pollutants are reported from a single monitoring site – Stora Gatan 78 – and each has two recent observation rows, giving a modest but consistent snapshot of conditions at that location.
The most recent values were recorded on 2026‑02‑10 at 18:00 UTC for both NO2 and PM10, meaning the data are fresh and fall within the “updated within 7 days” freshness bucket. For NO2 the observed concentrations range from a low of 24.53 µg/m³ to a high of 28.29 µg/m³, with a median of 26.41 µg/m³ and the 10th‑percentile at about 24.91 µg/m³ and the 90th‑percentile near 27.91 µg/m³. PM10 shows a broader spread: values run from 138.1 µg/m³ up to 148.8 µg/m³, median 143.45 µg/m³, with the 10th‑percentile at roughly 139.17 µg/m³ and the 90th‑percentile close to 147.73 µg/m³.
Because only one station contributes data, spatial coverage across Västerås is limited; conditions elsewhere in the city may differ from those captured at Stora Gatan 78. Nevertheless, the dataset provides a recent, dual‑pollutant view that captures typical day‑to‑day variability: NO2 stays within a narrow band of about 4 µg/m³, while PM10 varies over roughly 11 µg/m³. The consistent update time for both pollutants indicates reliable reporting frequency, but the single‑site nature means broader city‑wide trends cannot be inferred from this set alone.
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 Västerås is based on four valid measurements and was updated within 3 days, with the latest reading recorded at 2026‑02‑10 18:00 UTC. This snapshot reflects conditions at that specific time; air quality can vary across different neighbourhoods and throughout the day, so values may differ from what you experience elsewhere in the city.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| Västerås Stora Gatan 78 | no2 | 28.29 | µg/m³ | 2026-02-10 18:00 UTC |
| Västerås Stora Gatan 78 | pm10 | 138.1 | µg/m³ | 2026-02-10 18:00 UTC |
| Västerås Stora Gatan 78 | no2 | 24.53 | µg/m³ | 2026-02-10 16:00 UTC |
| Västerås Stora Gatan 78 | pm10 | 148.8 | µg/m³ | 2026-02-10 16:00 UTC |