Air quality in Itoshima, Japan today
Mr. Duck’s Air Quality Score
Good air today for Itoshima, Japan
This friendly indicator summarizes the latest city readings. For health guidance, please see: EPA AirNow or WHO.
Air quality today
The air quality in Itoshima is classified as Good today. The primary pollutant identified is PM2.5, fine particulate matter that is being monitored across the city.
Measurements show a PM2.5 concentration of 4.0 µg/m³ based on five valid observations recorded by OpenAQ. No PM10 value is available for this 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 Itoshima air‑quality record currently draws on five sensor rows, each reporting the same set of pollutants: nitrogen monoxide (NO), nitrogen dioxide (NO₂), total nitrogen oxides (NOX), fine particulate matter (PM2.5) and sulfur dioxide (SO₂). All five rows were last refreshed on 2026-02-10 22:00 UTC, which falls within the “updated within three days” window, so the data are relatively fresh for each compound.
Across the five observations NO registers a uniform value of 0.0 ppm, while both NO₂ and NOX show identical readings of 0.003 ppm. The PM2.5 concentration is consistently 4.0 µg/m³, and SO₂ again records 0.0 ppm. For every pollutant the minimum, median, maximum, 10th percentile and 90th percentile are all the same, indicating no variation among the rows that feed into this snapshot. Consequently, the typical (median) measurement is exactly the same as the observed range for each substance.
Because the dataset contains only a single location – 前原市大字浦志２１６－１ – the figures represent conditions at that point rather than city‑wide averages. The lack of spread in values means the current record cannot reveal spatial differences within Itoshima, and any changes that occur outside the reporting time or at other sites would not be captured here. Users should keep in mind that air quality can differ by neighborhood and over short periods, even though the present data are up‑to‑date for the listed monitoring point.
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 are based on five valid measurements and have been updated within three days, with the most recent reading recorded at 2026‑02‑10T22:00:00+00:00. This snapshot reflects conditions at the time of collection; air quality can vary across different neighborhoods and times of day within Itoshima, so actual exposure may differ from what is displayed here.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| 前原市大字浦志２１６－１ | no | 0.0 | ppm | 2026-02-10 22:00 UTC |
| 前原市大字浦志２１６－１ | no2 | 0.003 | ppm | 2026-02-10 22:00 UTC |
| 前原市大字浦志２１６－１ | nox | 0.003 | ppm | 2026-02-10 22:00 UTC |
| 前原市大字浦志２１６－１ | pm25 | 4.0 | µg/m³ | 2026-02-10 22:00 UTC |
| 前原市大字浦志２１６－１ | so2 | 0.0 | ppm | 2026-02-10 22:00 UTC |