Air quality in Bizen, Japan today
Mr. Duck’s Air Quality Score
Moderate air today for Bizen, 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 Bizen today falls into the Moderate category according to OpenAQ data. The primary pollutant identified is PM2.5, with a measured concentration of 13.0 µg/m³ based on five valid observations.
These values reflect the current monitoring snapshot for the city. 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 Bizen contains five measurement rows, one for each of the pollutants tracked at the city’s monitoring site: nitrogen monoxide (NO), nitrogen dioxide (NO2), total nitrogen oxides (NOX), fine particulate matter (PM2.5) and sulfur dioxide (SO2). All five rows were recorded at the same location – 備前市三石宿上３９３－３ – and each entry was last updated on 2026-02-10 22:00 UTC, which falls within the “updated within three days” freshness window.
Across the pollutants the reported concentrations are identical for their minimum, median and maximum values, indicating no observed variation in the recent sample set. NO is measured at 0.001 ppm, NO2 at 0.006 ppm, NOX at 0.007 ppm, SO2 also at 0.001 ppm, while PM2.5 registers a consistent 13.0 µg/m³. Because each pollutant has only a single recent reading, the data does not reveal any spread or temporal trend; the percentile values (10th and 90th) match the single reported figure for every component.
With just one monitoring station contributing all five rows, coverage is limited to that specific site, so conditions elsewhere in Bizen may differ from what these numbers show. The freshness of the data is good – all measurements are less than three days old – but the lack of multiple stations or repeated observations means the dataset provides only a snapshot rather than a detailed picture of air quality across 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 was refreshed recently, having been updated within three days (last update: 2026‑02‑10 22:00 UTC). While these readings give a reliable snapshot of Bizen’s current air quality, conditions can differ across neighborhoods and change throughout the day, so local variations may occur.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| 備前市三石宿上３９３－３ | no | 0.001 | ppm | 2026-02-10 22:00 UTC |
| 備前市三石宿上３９３－３ | no2 | 0.006 | ppm | 2026-02-10 22:00 UTC |
| 備前市三石宿上３９３－３ | nox | 0.007 | ppm | 2026-02-10 22:00 UTC |
| 備前市三石宿上３９３－３ | pm25 | 13.0 | µg/m³ | 2026-02-10 22:00 UTC |
| 備前市三石宿上３９３－３ | so2 | 0.001 | ppm | 2026-02-10 22:00 UTC |