Air quality in Arezzo, Tuscany, Italy today

Mr. Duck’s Air Quality Score

Unhealthy for sensitive groups for Arezzo, Tuscany, Italy

⚠️ 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 Arezzo today falls into the “USG” category according to the latest assessment. The primary pollutant identified is PM2.5 (fine particles), with a measured concentration of 47.02 µg/m³ based on eight valid observations from OpenAQ data.

No other pollutants are highlighted for this period, and the available measurements focus solely on fine particulate matter. 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 dataset for Arezzo in Tuscany aggregates measurements from three monitoring sites across fourteen recorded entries. It covers eight atmospheric variables: carbon monoxide (CO), nitrogen oxide (NO), nitrogen dioxide (NO₂), ozone (O₃), particulate matter of 1 µm (PM₁), 2.5 µm (PM₂.5) and 10 µm (PM₁₀) diameter, as well as relative humidity. The most recent observations are all from early February 2026, with the freshest timestamps recorded on 2026‑02‑10 at 21:00 UTC for PM₂.5, PM₁, and relative humidity; NO₂, O₃ and CO were last updated on 2026‑02‑09 at 03:00 UTC and 2026‑02‑08 at 19:00 UTC respectively. The older entry in the set is a NO measurement from 2024‑03‑11, indicating that not all pollutants are reported with equal recency.

Across the three stations the recorded values show a wide spread for some gases and a tighter range for others. NO peaks at 92 µg/m³ while its minimum is only 6 µg/m³, giving a ten‑fold variation; the median sits at 49 µg/m³. By contrast, CO, O₃, PM₁, and relative humidity each have a single reported value (600 µg/m³ for CO, 47 µg/m³ for O₃, 32.21 µg/m³ for PM₁, and 69.19 % for humidity), so no internal variability can be assessed from this snapshot. Particulate matter shows modest dispersion: PM₁₀ ranges from 36 to 41 µg/m³ (median 38.5 µg/m³) and PM₂.5 varies between 27 and 47 µg/m³ (median about 37 µg/m³).

Because the dataset contains a mixture of very recent rows for some pollutants and older or single‑point entries for others, it provides only a partial picture of air quality in Arezzo at any given moment. Conditions can differ between the three monitoring locations and over time, so readers should keep in mind that the available data reflects specific measurement moments rather than continuous coverage across the whole city.

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 Arezzo are based on eight valid measurements and were refreshed recently, with the latest update recorded at 2026‑02‑10T21:00:00+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