Air quality in Buzen, Japan today

Mr. Duck’s Air Quality Score

Good air today for Buzen, Japan

⚠️ This website is currently under active development. Some data may be incomplete or temporarily inaccurate. For health-critical decisions, please verify information through official government or environmental sources.

Categories follow US EPA AQI breakpoints for PM (estimate from latest valid measurements; this project does not compute EPA NowCast/24-hour AQI yet).

This friendly indicator summarizes the latest city readings. For health guidance, please see: EPA AirNow or WHO.

Air quality today

The air quality in Buzen is classified as Good today. The primary pollutant identified is PM2.5 (fine particles).

Measurements show a PM2.5 concentration of 3.0 µg/m³ based on five valid 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 Buzen contains measurements for five pollutants – nitrogen monoxide (NO), nitrogen dioxide (NO2), total nitrogen oxides (NOX), fine particulate matter (PM2.5) and sulfur dioxide (SO2). All of these come from a single monitoring site, located at 豊前市大字吉木９５５, so the city’s air‑quality picture is based on one set of observations rather than a network of stations.

The most recent readings were recorded on 2026-02-10 22:00 UTC and are flagged as “Updated within 3 days,” meaning the data are fresh for each pollutant. Because there is only one row per pollutant, the reported values show no variation: NO is consistently 0.0 ppm, NO2 and NOX both sit at 0.003 ppm, PM2.5 remains at 3.0 µg/m³, and SO2 is measured at 0.001 ppm. The minimum, median and maximum values are identical for each substance, indicating a uniform snapshot rather than a range of conditions.

With just one monitoring location, the dataset cannot capture spatial differences across Buzen, and the lack of multiple timestamps limits insight into short‑term fluctuations. Nonetheless, the current information provides a clear, up‑to‑date snapshot of the five measured pollutants at the specified site, offering a baseline for anyone interested in the city’s air quality at that moment.

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 Buzen reflects five valid measurements and was updated within 3 days, with the most recent reading recorded at 2026‑02‑10T22:00:00+00:00. These values provide a current snapshot of ambient conditions but note that air quality can differ across neighborhoods and change throughout the day, so local variations may not be captured in this summary.

OpenAQ station rows