Air quality in Trier, Rhineland-Palatinate, Germany today

Mr. Duck’s Air Quality Score

Good air today for Trier, Rhineland-Palatinate, 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 Trier today falls into the Good category according to the latest assessment. The main pollutant identified is PM2.5 (fine particles). Measured concentrations show a PM2.5 value of 6.397005 and a PM10 value of 3.069284, based on seven valid observations collected via OpenAQ.

These figures indicate that particulate matter levels are within the range associated with the Good classification for this location. 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 Trier contains measurements of carbon monoxide (CO), nitrogen oxide (NO), nitrogen dioxide (NO₂), ozone (O₃), particulate matter ≤ 10 µm (PM₁₀), particulate matter ≤ 2.5 µm (PM₂.₅) and sulfur dioxide (SO₂). In total 14 individual rows have been recorded across three monitoring stations, so the spatial coverage is limited to a handful of points within the city.

The most recent values are fairly fresh for most pollutants: NO was last updated on 2024‑03‑11 11:00 UTC at the Ostallee site, while NO₂, PM₂.₅ and O₃ were refreshed on 2026‑02‑10 18:00 UTC at the Pfalzel location. CO, PM₁₀ and SO₂ all show a single reading from 2026‑02‑10 17:00 UTC at Ostallee. Across the dataset, eight rows are classified as “old” (older than three days) and six are current, indicating that a substantial portion of the data is recent but some measurements still rely on older entries.

The observed concentrations span a wide range for several gases. NO varies from about 1.7 µg/m³ up to 65.5 µg/m³, with a median near 8 µg/m³, while NO₂ stays within a tighter band of roughly 31 µg/m³ to 38.7 µg/m³ and averages around 33.7 µg/m³. PM₂.₅ shows the greatest spread among particulates, from just over 1 µg/m³ to more than 41 µg/m³, with a median of 6.4 µg/m³; in contrast, PM₁₀ is represented by a single value of 3.07 µg/m³. Ozone ranges from about 1 µg/m³ to 21.6 µg/m³, medianing at 11.3 µg/m³. CO and SO₂ each have only one recorded level—455.48 µg/m³ for CO and 1.00 µg/m³ for SO₂—both from the same recent timestamp.

Overall, the data give a snapshot of key air‑quality constituents in Trier but are constrained by limited station density and a mix of very recent and older entries, meaning conditions can differ across neighborhoods and over time.

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 Trier are based on seven valid measurements and were updated within 3 days, with the latest refresh recorded at 2026‑02‑10T18:00:00+00:00. This snapshot reflects conditions at a specific time and location; air quality can differ across neighborhoods and change throughout the day. Consequently, values should be interpreted as an indicative sample rather than a comprehensive, city‑wide assessment.

OpenAQ station rows