Air quality in Kiso, Japan today
Mr. Duck’s Air Quality Score
Good air today for Kiso, 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 Kiso today is classified as Good. The primary pollutant identified is PM2.5, with a measured concentration of 0.0 µg/m³ based on five valid observations reported through OpenAQ.
Overall conditions meet the Good category criteria, and the data set includes five recent measurements confirming the PM2.5 level. 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 Kiso air‑quality dataset contains measurements for five key pollutants – nitrogen monoxide (NO), nitrogen dioxide (NO₂), total nitrogen oxides (NOX), fine particulate matter (PM2.5) and sulfur dioxide (SO₂). All of these are reported from a single monitoring location at 木曽郡木曽町福島2757‑1, so the city’s coverage in this snapshot is limited to one station but each pollutant has a recent reading recorded on 2026‑02‑10 22:00 UTC. Because every row falls into the “last three days” freshness bucket, the data are up‑to‑date for all five substances.
The numeric values show very little variation across the dataset. For NO, PM2.5 and SO₂ the minimum, median and maximum are all 0.0, indicating no detectable concentration at the time of measurement. Both NO₂ and NOX have a uniform reading of 0.001 ppm, with the same figure appearing as the 10th percentile, median and 90th percentile. This lack of spread means that the typical (median) level is identical to both the lowest and highest observed values for each pollutant.
Because only one monitoring site contributes data, the picture presented here cannot capture spatial differences that may exist elsewhere in Kiso. While the timestamps are fresh, the single‑point coverage limits insight into how conditions might vary across neighborhoods or over longer periods. Users should keep in mind that air quality can change with location and time, and this dataset reflects a snapshot from one specific spot on 2026‑02‑10.
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 Kiso reflects five valid measurements and was refreshed recently, with the latest update recorded on 2026‑02‑10 at 22:00 UTC; it is considered “Updated within 3 days.” This snapshot provides a current view of 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
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| 木曽郡木曽町福島2757-1 | no | 0.0 | ppm | 2026-02-10 22:00 UTC |
| 木曽郡木曽町福島2757-1 | no2 | 0.001 | ppm | 2026-02-10 22:00 UTC |
| 木曽郡木曽町福島2757-1 | nox | 0.001 | ppm | 2026-02-10 22:00 UTC |
| 木曽郡木曽町福島2757-1 | pm25 | 0.0 | µg/m³ | 2026-02-10 22:00 UTC |
| 木曽郡木曽町福島2757-1 | so2 | 0.0 | ppm | 2026-02-10 22:00 UTC |