Air quality in Tulcea, Romania today

Mr. Duck’s Air Quality Score

Good air today for Tulcea, Romania

⚠️ 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 Tulcea is currently classified as Good. The primary pollutant identified is PM10, with a measured reference value of 9.04 µg/m³ based on the available data set.

A total of seven valid measurements were used to determine this assessment, and the reported PM10 level reflects those observations. 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

Tulcea’s OpenAQ feed currently includes five measured pollutants – carbon monoxide (CO), nitrogen dioxide (NO₂), ozone (O₃), particulate matter 10 µm or less (PM₁₀) and sulphur dioxide (SO₂). The data come from 14 recent observations recorded at four monitoring stations, giving a modest spatial coverage across the city. All of the latest updates were logged on 2026‑02‑10 at 19:00 UTC, so every pollutant has a timestamp that falls within the past seven days.

The observed values show a wide spread for some gases and a tight cluster for others. NO₂ ranges from about 3.9 µg/m³ up to a peak of 58.9 µg/m³, with a median around 26.5 µg/m³; the 10th‑percentile sits near 9.1 µg/m³ and the 90th‑percentile close to 50.8 µg/m³, indicating considerable variability across measurement points. O₃ is less variable, staying between roughly 50.8 µg/m³ and 70.4 µg/m³, median 60.6 µg/m³, with the central 80 % of readings squeezed into a 15‑µg/m³ band. SO₂ values are low and tightly grouped, from just above zero to about 6.9 µg/m³, median 6.2 µg/m³; the 10th‑percentile is near 0.98 µg/m³ and the 90th‑percentile around 6.87 µg/m³. PM₁₀ shows the narrowest range of all, spanning only 8.14 µg/m³ to 9.04 µg/m³, median 8.59 µg/m³, with the bulk of measurements clustered between 8.23 and 8.95 µg/m³.

CO is an outlier in both magnitude and distribution. The dataset includes a negative minimum (‑1000 µg/m³) and a maximum of 123.34 µg/m³; the median sits at –438.33 µg/m³, while the 10th‑percentile is far below zero (‑887.67 µg/m³) and the 90th‑percentile barely reaches 11 µg/m³. This irregular pattern suggests data quality issues for CO, contrasting with the more consistent readings of the other pollutants. Overall, Tulcea’s air‑quality snapshot offers recent, multi‑pollutant information but reflects limited station density and uneven reliability across the measured species.

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 Tulcea is based on seven valid measurements and was refreshed recently, with the latest update recorded at 2026‑02‑10T19:00:00+00:00 (updated within 3 days). This snapshot reflects conditions at the time of sampling; air quality can differ across neighborhoods and change throughout the day, so values may not represent every location or moment in the city.

OpenAQ station rows