Air quality in Ageo, Japan today
Mr. Duck’s Air Quality Score
Good air today for Ageo, 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 Ageo today is rated as Good. The primary pollutant identified is PM2.5, with a measured concentration of 9.0 µg/m³. Four valid measurements were recorded to support this assessment and the data are shown via OpenAQ.
Overall conditions meet the criteria for a Good rating based on the available observations. 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 Ageo contains four pollutant records drawn from a single monitoring location (上尾市浅間台３－３５). All four measured species—nitric oxide (NO), nitrogen dioxide (NO2), combined nitrogen oxides (NOX) and fine particulate matter (PM2.5)—are represented, but the depth of information differs across them.
The most recent timestamps are fairly fresh for the gaseous pollutants: NO, NO2 and NOX were each last updated on 2026-02-10 22:00 UTC, which falls within a three‑day freshness window. In contrast, the PM2.5 reading is older, with its latest update recorded on 2026-02-04 01:00 UTC, placing it in a thirty‑day freshness bucket. Because only one station contributes data, there is no spatial spread across the city; conditions can therefore vary elsewhere and are not captured here.
Across the four rows the values show virtually no variation. NO registers a constant 0.0 ppm (minimum, median and maximum all zero). Both NO2 and NOX sit at a steady 0.017 ppm, with identical minimum, median, 10th‑percentile and 90th‑percentile figures. PM2.5 is likewise uniform at 9.0 µg/m³ for every statistic reported. This lack of spread suggests the dataset captures a single moment rather than a range of conditions, and the limited number of rows means broader temporal or spatial trends cannot be assessed from these numbers alone.
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 reflects four valid measurements and is updated within 3 days, with the latest reading recorded at 2026‑02‑10T22:00:00+00:00. This snapshot provides a brief overview of current conditions, but air quality can vary by location and time within Ageo, so values may differ across neighborhoods or later in the day.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| 上尾市浅間台３－３５ | no | 0.0 | ppm | 2026-02-10 22:00 UTC |
| 上尾市浅間台３－３５ | no2 | 0.017 | ppm | 2026-02-10 22:00 UTC |
| 上尾市浅間台３－３５ | nox | 0.017 | ppm | 2026-02-10 22:00 UTC |
| 上尾市浅間台３－３５ | pm25 | 9.0 | µg/m³ | 2026-02-04 01:00 UTC |