Air quality in Ako, Japan today
Mr. Duck’s Air Quality Score
Moderate air today for Ako, 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 Ako is currently classified as Moderate. The primary pollutant identified is PM2.5 (fine particles), with a measured concentration of 16.0 µg/m³. Data are based on five valid measurements and are displayed via OpenAQ.
Overall conditions reflect the moderate category, and no additional pollutants have been highlighted. 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 Ako contains five recent measurement rows, each reporting a single pollutant from the same monitoring site at 赤穂市加里屋８１番地. All five entries were last updated on 2026‑02‑10 22:00 UTC, which falls within the “updated within 3 days” freshness bucket, so the data are uniformly current across the city’s only reporting location.
The pollutants available are nitrogen monoxide (NO), nitrogen dioxide (NO₂), total nitrogen oxides (NOX), fine particulate matter (PM2.5) and sulfur dioxide (SO₂). For NO, NO₂ and NOX the recorded values are identical: a minimum, median and maximum of 0.009 ppm for NO₂ and NOX, while NO registers a flat 0.0 ppm. The PM2.5 reading is also uniform at 16.0 µg/m³ across its statistical summary. SO₂ mirrors the NO result with a constant 0.0 ppm. Because each pollutant has only one observation point, there is no spread in the data; the 10th and 90th percentiles match the single recorded value for every metric.
These numbers illustrate that the current snapshot captures a very limited spatial picture—only one sensor contributes all five pollutants—and the values show no variability over time or across locations. While the timestamps are recent, the lack of multiple stations means city‑wide conditions could differ elsewhere or at other moments. Users should keep in mind that this single‑site dataset provides a narrow view of Ako’s air quality on the reported date.
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 Ako reflects five valid measurements and is marked as Updated within 3 days, with the latest values recorded at 2026‑02‑10T22:00:00+00:00. These figures provide a recent snapshot of citywide air quality but should be interpreted cautiously, as conditions can differ across neighborhoods and change throughout the day.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| 赤穂市加里屋８１番地 | no | 0.0 | ppm | 2026-02-10 22:00 UTC |
| 赤穂市加里屋８１番地 | no2 | 0.009 | ppm | 2026-02-10 22:00 UTC |
| 赤穂市加里屋８１番地 | nox | 0.009 | ppm | 2026-02-10 22:00 UTC |
| 赤穂市加里屋８１番地 | pm25 | 16.0 | µg/m³ | 2026-02-10 22:00 UTC |
| 赤穂市加里屋８１番地 | so2 | 0.0 | ppm | 2026-02-10 22:00 UTC |