Air quality in Colleferro, Lazio, Italy today

Mr. Duck’s Air Quality Score

Moderate air today for Colleferro, Lazio, 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 Colleferro today is classified as Moderate. The primary pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 concentration of 15.0 µg/m³ and a PM10 level of 22.0 µg/m³, based on 14 valid observations reported through OpenAQ.

These values reflect the current monitoring snapshot for the city. 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 Colleferro includes eight measured pollutants – carbon monoxide (CO), nitrogen oxide (NO), nitrogen dioxide (NO₂), the combined NOX metric, ozone (O₃), particulate matter of up to 10 µm (PM₁₀) and up to 2.5 µm (PM₂.₅), and sulfur dioxide (SO₂). The dataset draws from four monitoring stations that together contribute 17 recent rows of data. All the values shown were recorded within the last seven days, with the most recent timestamps ranging from 2026‑02‑08 00:00 UTC to 2026‑02‑09 03:00 UTC, so the information reflects near‑real‑time conditions across the city.

Across the pollutants the observed concentrations span a fairly wide range. CO is reported between 700 and 800 µg/m³, with a median of 750 µg/m³; O₃ varies from 50 to 55 µg/m³ (median 52.5 µg/m³); SO₂ stays low, ranging only from 3.3 to 3.7 µg/m³ (median 3.5 µg/m³). Particulate matter shows less variability: PM₁₀ is a single value of 22 µg/m³ and PM₂.₅ is consistently 15 µg/m³ in the latest row. The nitrogen compounds display broader spreads: NO₂ ranges from 4 to 64 µg/m³ (median 12.5 µg/m³), NO from 0 to 5 µg/m³ (median 2.5 µg/m³), and NOX from 9 to 24 µg/m³ (median 16.5 µg/m³). These figures illustrate that while some pollutants such as CO and O₃ have relatively tight clusters, others like NO₂ can fluctuate more markedly across the monitoring period.

The coverage is uneven: PM₁₀, PM₂.₅, CO, O₃, SO₂ and the nitrogen species each have at least two recent rows, but only one row is available for PM₂.₅, limiting insight into its short‑term variability. Overall, the dataset provides a fresh snapshot of air quality in Colleferro, yet the limited number of stations and occasional single‑row entries mean that conditions can still differ across neighborhoods and times not captured by these measurements.

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 dataset for Colleferro includes 14 valid measurements and is marked as Updated within 3 days, with the most recent data recorded on 2026‑02‑09T03:00:00+00:00. This snapshot reflects conditions at a specific time and place; air quality can vary across different neighborhoods and moments throughout the day, so values may not represent the entire city uniformly.

OpenAQ station rows