Air quality in Bacău, Romania today

Mr. Duck’s Air Quality Score

Good air today for Bacău, 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 Bacău is classified as Good today. The primary pollutant identified is PM10, which represents the coarser fraction of particulate matter measured in the city’s monitoring network.

Thirteen valid measurements were recorded, and the reported PM10 concentration aligns with a reference value of 11.0 µg/m³. 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 air‑quality feed for Bacău pulls data from four monitoring stations and currently holds twenty recent measurement rows. All five key pollutants—carbon monoxide (CO), nitrogen dioxide (NO₂), ozone (O₃), particulate matter 10 µm or less (PM10) and sulfur dioxide (SO₂)—are represented, but the amount of information varies between them. The newest timestamps for each pollutant are all from 2026‑02‑10 19:00 UTC, so the dataset reflects conditions recorded at essentially the same moment across the board.

Carbon monoxide shows a wide spread, with values ranging from 72.38 µg/m³ up to 966.40 µg/m³ and a median of 468.09 µg/m³, indicating that some stations are reporting concentrations an order of magnitude higher than others. Nitrogen dioxide is less variable, recorded between 13.07 and 33.41 µg/m³ with a median of 18.88 µg/m³. Ozone values sit near the upper end of their range, from 5.99 to 65.63 µg/m³, and the median (62.32 µg/m³) is close to the maximum, suggesting consistently high readings across stations. PM10 concentrations are low overall, spanning 8.32 to 31.57 µg/m³ with a median of 9.66 µg/m³, while sulfur dioxide appears as a single constant value of 7.18 µg/m³ in the limited data available.

Because the dataset contains only four stations, spatial coverage is modest and any single reading may not capture micro‑scale variations within the city. The uniform freshness of the timestamps means the snapshot is current, but the uneven number of rows per pollutant—especially the solitary SO₂ record—highlights gaps that could affect a fuller picture of Bacău’s air quality at different times or locations.

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 Bacău is based on 13 valid measurements and was refreshed recently, Updated within 3 days (last update 2026‑02‑10T19:00:00+00:00). 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