Air quality in Arad, Romania today

Mr. Duck’s Air Quality Score

Good air today for Arad, 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 Arad is currently classified as Good. The primary pollutant measured today is PM10, with a reported reference value of 14.73 µg/m³ based on the available data set.

A total of eleven valid measurements were recorded for this assessment, and the information is shown via OpenAQ. 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 Arad includes five measured pollutants – carbon monoxide (CO), nitrogen dioxide (NO₂), ozone (O₃), particulate matter 10 µm or less (PM₁₀) and sulphur dioxide (SO₂). Data come from four monitoring stations, giving a modest spatial coverage across the city. All of the latest readings were recorded on 2026‑02‑10 at 19:00 UTC, so the most recent values are fresh, although the overall dataset contains older entries that stretch back beyond the last seven days for some parameters.

For CO the current value is 148.58 µg/m³ (station AR‑2) with a median of about 120 µg/m³ and an observed range from –1000 to 1 142 µg/m³, indicating a very wide spread in the historical record. NO₂ shows a present concentration of 28.97 µg/m³ (AR‑2), a median near 14 µg/m³ and a historic minimum of –1 extending up to roughly 142 µg/m³. O₃ is reported at 33.48 µg/m³ (AR‑2); its median matches the latest value, while past measurements have varied between about 9 and 40 µg/m³. PM₁₀’s newest reading is 11.29 µg/m³ from station AR‑1, with a median of 14.37 and a historical span from 11.3 to 96.2 µg/m³. SO₂ registers at 5.66 µg/m³ (AR‑2), median 5.96, and has been observed between –1 and 15.5 µg/m³.

The dataset reveals uneven depth across pollutants: CO and NO₂ have the broadest historical ranges, while O₃, PM₁₀ and SO₂ show tighter spreads. Although the latest timestamps are all recent, many of the older records include implausible negative minima, suggesting occasional data‑quality issues. Consequently, while the current snapshot reflects up‑to‑date conditions at four sites, the broader picture for Arad can differ by location and time, and users should keep in mind that coverage is limited to these stations.

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 Arad is based on 11 valid measurements and was refreshed recently, with the latest update recorded at 2026‑02‑10T19:00:00+00:00; it is considered Updated within 3 days. This snapshot reflects conditions captured across the monitoring network at that time, but air quality can vary by location and moment within the city, so values may differ from what you experience elsewhere or later in the day.

OpenAQ station rows