Air quality in Freiburg im Breisgau, Baden-Württemberg, Germany today

Mr. Duck’s Air Quality Score

Good air today for Freiburg im Breisgau, Baden-Württemberg, Germany

⚠️ 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 Freiburg im Breisgau is assessed as Good today. The main pollutant identified is PM2.5, with a measured concentration of 0.531 µg/m³ (reference value 0.5307 µg/m³). In addition, the PM10 level is reported at 0.5 µg/m³ based on 18 valid measurements.

Data are shown via OpenAQ and reflect the current 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 OpenAQ feed for Freiburg im Breisgau contains data from three monitoring sites spread across the city and its surrounding hills, with a total of twenty‑two individual rows of measurements. All ten pollutants that are routinely tracked in the network appear in the dataset: carbon monoxide (CO), nitrogen oxide (NO), nitrogen dioxide (NO₂), ozone (O₃), particulate matter of 1 µm (PM₁), 2.5 µm (PM₂.₅) and 10 µm (PM₁₀) size fractions, relative humidity, sulfur dioxide (SO₂), temperature and the auxiliary variable UM003.

The most recent observations are from early February 2026, with the freshest timestamps recorded at 2026‑02‑10 18:00 UTC for PM₁₀, NO₂, O₃ and SO₂, at 2026‑02‑10 19:00 UTC for PM₂.₅ and PM₁, and at 2026‑02‑10 17:00 UTC for CO. Only the NO data are older, last updated on 2024‑03‑11 11:00 UTC, which means that nitrogen oxide values may not reflect current conditions. Across pollutants the median concentrations are low: PM₁₀ sits at 7.3 µg/m³ (range 0.5–21.1), PM₂.₅ at 1.27 µg/m³ (0.5–2.0), NO₂ at 8.4 µg/m³ (1.45–25.75) and O₃ at 72.5 µg/m³ (67.7–77.3). The spread is wider for the larger particles, with the 10th percentile of PM₁₀ at 1.85 µg/m³ and the 90th percentile at 17.65 µg/m³, whereas CO shows a single reported value of 200 µg/m³ from the Schwarzwaldstraße site.

Overall the dataset offers fairly recent coverage for most pollutants but is uneven in temporal depth: three‑quarters of the measurements are from the past few days, while NO remains dated. Because the data come from only three stations, spatial variation within Freiburg can be significant; conditions at the hilltop Schauinsland station differ from those recorded in the city centre. Users should therefore treat the figures as snapshots rather than a complete picture of air quality across every neighbourhood and hour.

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 set for Freiburg im Breisgau contains 18 valid measurements and is updated within 3 days, with the latest values recorded on 2026‑02‑10 at 19:00 UTC. This snapshot reflects conditions at the time of collection; air quality can vary across different neighbourhoods and throughout the day, so individual experiences may differ from the reported figures.

OpenAQ station rows