Air quality in Kumiyama, Japan today
Mr. Duck’s Air Quality Score
Moderate air today for Kumiyama, 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 Kumiyama is currently classified as Moderate. The primary pollutant identified is PM2.5, with a measured concentration of 16.0 µg/m³ based on five valid observations reported through OpenAQ.
These data reflect the present conditions without additional interpretation. 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 Kumiyama currently draws from a single monitoring site located at 久世郡久御山町坊ノ池高河原５番地. Five pollutants are reported: nitrogen monoxide (NO) at 0.002 ppm, nitrogen dioxide (NO₂) at 0.019 ppm, total oxides of nitrogen (NOX) at 0.021 ppm, fine particulate matter (PM2.5) at 16.0 µg/m³, and sulfur dioxide (SO₂) at 0.0 ppm. All values are identical to their minimum, median and maximum figures, indicating that only one measurement per pollutant is available.
The most recent update for every parameter was recorded on 2026-02-10 22:00 UTC, which falls within the “updated within 3 days” freshness category. Because there is just one row of data, the overall coverage is limited to a single point in the town rather than a network of stations, so spatial variation across Kumiyama cannot be captured.
Because each pollutant shows no observed spread (the 10th and 90th percentiles match the single value), the dataset provides a snapshot rather than a range of conditions. The presence of SO₂ at zero ppm and the modest PM2.5 concentration suggest that, at the time of measurement, those constituents were either absent or below detection limits at this location. Users should keep in mind that air quality can differ across neighborhoods and times, and the current data reflects only one recent observation from a single site.
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 reflect five valid measurements and were updated within 3 days, with the latest refresh recorded at 2026‑02‑10T22:00:00+00:00. This snapshot provides a current view of Kumiyama’s air quality but note that conditions can differ across neighborhoods and change throughout the day, so values may not represent every location or moment within the city.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| 久世郡久御山町坊ノ池高河原５番地 | no | 0.002 | ppm | 2026-02-10 22:00 UTC |
| 久世郡久御山町坊ノ池高河原５番地 | no2 | 0.019 | ppm | 2026-02-10 22:00 UTC |
| 久世郡久御山町坊ノ池高河原５番地 | nox | 0.021 | ppm | 2026-02-10 22:00 UTC |
| 久世郡久御山町坊ノ池高河原５番地 | pm25 | 16.0 | µg/m³ | 2026-02-10 22:00 UTC |
| 久世郡久御山町坊ノ池高河原５番地 | so2 | 0.0 | ppm | 2026-02-10 22:00 UTC |