Air quality in Konosu, Japan today
Mr. Duck’s Air Quality Score
Moderate air today for Konosu, 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 Konosu is currently classified as Moderate. The primary pollutant identified is PM2.5 (fine particles), with a measured concentration of 14.0 µg/m³ based on five valid observations.
Data are shown via OpenAQ and reflect the latest available readings for this location. 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 Konosu air‑quality record consists of a single monitoring location, identified as 鴻巣市中央１－１, which supplies data for five pollutants: nitrogen monoxide (NO), nitrogen dioxide (NO2), combined nitrogen oxides (NOX), fine particulate matter (PM2.5) and sulfur dioxide (SO2). Because there is only one row of measurements, the dataset does not capture spatial variation across the city; all values reflect conditions at that central site.
All five pollutants were last updated on 2026‑02‑10 at 22:00 UTC, so the most recent observations are less than three days old. The reported concentrations are identical to their minimum, median and maximum values, indicating no observed variability within the available record. NO registers at 0.001 ppm, NO2 at 0.017 ppm, NOX at 0.018 ppm, SO2 also at 0.001 ppm, while PM2.5 measures 14.0 µg/m³. Because each pollutant has a single recorded value, the data set cannot describe any range or distribution beyond these point figures.
Given that only one sensor contributes to the city’s profile, the dataset provides a very limited snapshot of air quality. While the timestamps are current, the lack of multiple stations means conditions elsewhere in Konosu may differ from those captured at 鴻巣市中央１－１. Users should keep in mind that this single‑point data set offers no insight into temporal trends or spatial gradients within the city.
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 five valid measurements and is updated within 3 days, with the most recent reading recorded at 2026‑02‑10T22:00:00+00:00. These values provide a snapshot of Konosu’s air quality at that time; conditions can differ across neighborhoods and may change throughout the day.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| 鴻巣市中央１－１ | no | 0.001 | ppm | 2026-02-10 22:00 UTC |
| 鴻巣市中央１－１ | no2 | 0.017 | ppm | 2026-02-10 22:00 UTC |
| 鴻巣市中央１－１ | nox | 0.018 | ppm | 2026-02-10 22:00 UTC |
| 鴻巣市中央１－１ | pm25 | 14.0 | µg/m³ | 2026-02-10 22:00 UTC |
| 鴻巣市中央１－１ | so2 | 0.001 | ppm | 2026-02-10 22:00 UTC |