Air quality in Karlsruhe, Baden-Württemberg, Germany today

Mr. Duck’s Air Quality Score

Good air today for Karlsruhe, 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 Karlsruhe today is classified as Good. The main pollutant identified is PM2.5, fine particulate matter. Measurements show a PM2.5 reference value of 3.0 µg/m³ and a PM10 reference value of 9.4 µg/m³, based on seven valid observations recorded via OpenAQ.

These figures indicate that the current concentrations are within the limits associated with the Good category. 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 Karlsruhe contains measurements for seven pollutants – carbon monoxide (CO), nitrogen oxide (NO), nitrogen dioxide (NO2), ozone (O3), particulate matter 10 µm and smaller (PM10), particulate matter 2.5 µm and smaller (PM2.5), and sulphur dioxide (SO2). These values come from a total of eleven rows, but only two distinct monitoring stations are represented: Karlsruhe‑Nordwest supplies data for NO, NO2, PM10, PM2.5 and O3, while Karlsruhe Reinhold‑Frank‑Straße provides the CO reading; SO2 is also recorded at Nordwest but its last update dates back to 2017.

Freshness varies markedly across the pollutants. The most recent updates were recorded on 2026-02-10 17:00 UTC for NO2, PM10, PM2.5, O3 and CO, showing that half of the dataset reflects conditions from just a few days ago. In contrast, the NO measurement is older, last refreshed on 2024-03-11 11:00 UTC, and the SO2 value is considerably stale, with its most recent entry from 2017‑01‑06 09:00 UTC.

The observed concentration ranges are narrow for several species. At the Nordwest site, NO spans from a minimum of 2.1 µg/m³ to a maximum of 21.7 µg/m³, with a median around 11.9 µg/m³; NO2 varies between 10.074 and 44.081 µg/m³, median 27.08 µg/m³. Particulate matter shows limited variability: PM10 ranges from 6.5 to 9.4 µg/m³ (median 7.95), while PM2.5 stays between 2.0 and 3.0 µg/m³ (median 2.5). Ozone is reported as a single value of 57.221 µg/m³, and CO appears at a constant 600.0 µg/m³.

Overall the data set offers recent coverage for most pollutants but is uneven: half of the stations provide up‑to‑date readings, yet key components such as SO2 rely on very old measurements. Consequently, while the available figures give a snapshot of current air quality at two locations, conditions elsewhere in Karlsruhe may differ and older entries should be interpreted with caution.

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 Karlsruhe are based on seven valid measurements and were refreshed recently, with the latest update recorded at 2026‑02‑10T17:00:00+00:00 (updated within 3 days). This snapshot reflects conditions at the time of sampling; air quality can differ across neighbourhoods and change throughout the day, so values may not represent every location or moment in the city.

OpenAQ station rows