Air quality in Ruse, Ruse, Bulgaria today

Mr. Duck’s Air Quality Score

Moderate air today for Ruse, Ruse, Bulgaria

⚠️ 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 Ruse today falls into the Moderate category. The primary pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 concentration of 20.82 µg/m³ and a PM10 level of 20.7 µg/m³, based on twelve valid observations collected via OpenAQ.

These values reflect the current state of ambient air in the city without implying any trend or cause. 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 Ruse air‑quality record draws on 20 measurement rows collected at three monitoring sites across the city. For each row OpenAQ supplies values for carbon monoxide (CO), nitrogen oxide (NO), nitrogen dioxide (NO₂), ozone (O₃), particulate matter of several size fractions (PM1, PM2.5, PM4 and PM10), temperature, pressure, humidity and related variables such as relative humidity and a generic sensor label UM003. The most recent observations are all from the last few days: CO, NO₂ and O₃ were reported on 2026‑02‑10 at 19:00 UTC; PM1, PM2.5, PM10 and temperature were logged on 2026‑02‑10 between 22:28 and 22:29 UTC; the lone NO reading dates back to 2024‑03‑11, while a handful of rows are flagged as “unknown” in terms of freshness. Overall, six of the twenty rows are recent (updated within three days), thirteen are older than three days, one is explicitly old, and six have an unknown timestamp.

Across the available pollutants the data show a fairly tight numeric spread for most gases: CO is constant at 360 µg/m³, NO sits at 2.91 µg/m³, NO₂ at 16.33 µg/m³ and O₃ at 44.57 µg/m³ in the latest records. Particulate matter exhibits more variation; PM10 values range from a low of 20.7 to a high of 34.21 µg/m³ with a median around 30.6 µg/m³, while PM2.5 spans 8.48‑27.09 µg/m³ (median ≈ 20.8) and PM1 is confined between 17.37 and 19.67 µg/m³ (median ≈ 18.5). Temperature measurements cover a broader interval from 3.36 °C up to 23.07 °C, median roughly 13.2 °C, reflecting the day‑night or seasonal swing captured at the PGPT Burov site.

Because only three stations contribute data and several rows are dated or lack a clear update time, the picture of air quality in Ruse is necessarily limited to these specific locations and moments. Conditions can differ across neighborhoods and over shorter periods than the timestamps indicate, so the reported values represent snapshots rather than a continuous city‑wide monitoring network.

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 Ruse reflects a total of twelve valid measurements and is updated within three days, with the most recent update recorded on 2026‑02‑10 at 22:29 UTC. While this snapshot provides a reliable overview of current conditions, air quality can differ across neighborhoods and change throughout the day, so local variations may not be captured in these figures.

OpenAQ station rows