Air quality in Fontechiari, Lazio, Italy today

Mr. Duck’s Air Quality Score

Good air today for Fontechiari, 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 Fontechiari today is classified as Good. The main pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 reference value of 9.0 and a PM10 reference value of 13.0, based on nine valid observations collected via OpenAQ.

Overall conditions meet the criteria for the Good category according to the latest assessment. 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 Fontechiari draws from two monitoring stations and contains nine recent measurement rows covering seven pollutants: nitrogen monoxide (NO), nitrogen dioxide (NO₂), combined nitrogen oxides (NOX), ozone (O₃), particulate matter ≤10 µm (PM10), particulate matter ≤2.5 µg (PM2.5), and sulfur dioxide (SO₂). All values are reported in micrograms per cubic metre (µg/m³).

The freshest records were logged on 2026‑02‑09, with the most recent timestamps at 03:00 UTC for NO₂ and O₃ and at 00:00 UTC for the remaining five pollutants. This means every pollutant has data that is no older than three days, satisfying a “updated within 7 days” freshness criterion across the board.

Across the nine rows the measured concentrations are remarkably uniform. For NO₂ the single recorded value is 1.0 µg/m³ (median = 1.0, range = 1.0‑1.0); O₃ shows a narrow band from 43.0 to 44.0 µg/m³ with a median of 43.5 µg/m³; NO is consistently 2.0 µg/m³; NOX stays at 4.0 µg/m³; PM10 and PM2.5 are fixed at 13.0 µg/m³ and 9.0 µg/m³ respectively; and SO₂ records a single value of 2.2 µg/m³. The lack of variation indicates that each pollutant is represented by only one recent observation per station, limiting insight into short‑term fluctuations.

Because the dataset comprises just two stations, spatial coverage for Fontechiari is limited. While the timestamps are current, the sparse number of rows and the single‑value nature of most pollutants mean the data captures a snapshot rather than a detailed temporal or geographic profile. Users should keep in mind that air quality can differ across neighborhoods and over hours not reflected in these nine recent entries.

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 Fontechiari reflects nine valid measurements and is updated within 3 days, with the latest set recorded on 2026‑02‑09 at 03:00 UTC. This snapshot provides a recent view of ambient air quality but conditions can differ across neighborhoods and change throughout the day, so local variations may not be captured in these figures.

OpenAQ station rows