Air quality in Constanța, Romania today

Mr. Duck’s Air Quality Score

Good air today for Constanța, 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 Constanța is classified as Good today. The primary pollutant identified is PM10, with a measured reference value of 8.30 µg/m³ based on fifteen valid observations reported through OpenAQ.

Overall conditions meet the criteria for a Good rating, and the data reflect the current state without additional commentary. 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

Constanța’s open‑air quality feed contains data for five key pollutants – carbon monoxide (CO), nitrogen dioxide (NO₂), ozone (O₃), particulate matter 10 µm or less (PM₁₀) and sulphur dioxide (SO₂). The dataset is built from 29 individual measurement rows collected at five monitoring stations across the city. All of the pollutants have a most‑recent reading dated 2026‑02‑10 19:00 UTC, so the latest information for each is no older than a few days.

The values show a wide spread between minimum and maximum observations. For NO₂ the recorded range runs from just below zero up to 21.24 µg/m³, with a median of about 16 µg/m³; PM₁₀ varies between 4.0 and 64.93 µg/m³, centering around a median of 7.49 µg/m³; SO₂ is measured from below zero to 6.38 µg/m³, with a typical level near 1.80 µg/m³. CO data contain an extreme low placeholder of –1000 µg/m³ but the highest valid reading reaches 49.39 µg/m³ and the recent value is 47.46 µg/m³ at station CT‑2. O₃ values lie between 35.67 and 60.26 µg/m³, with a median of 42.19 µg/m³ and a current reading of 42.02 µg/m³ at CT‑2.

Coverage is uneven: NO₂, PM₁₀ and SO₂ each have seven recent rows, while CO and O₃ have fewer (five and four respectively). The “freshness” flag indicates that all pollutants were updated within the last week, yet the presence of placeholder minima (e.g., –1 or –1000) suggests some older or incomplete records remain in the set. Consequently, while the most recent snapshots give a timely picture for each pollutant at specific stations, the overall city‑wide conditions can still differ by location and time, reflecting the limited number of monitoring points.

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 Constanța is based on 15 valid measurements and was refreshed within the past three days, with the latest update recorded at 2026‑02‑10T19:00:00+00:00. This snapshot reflects conditions at a specific time and place; air quality can differ across neighborhoods and throughout the day, so values may not represent the entire city at any given moment.

OpenAQ station rows