Air quality in Kumakogen, Japan today

Mr. Duck’s Air Quality Score

Good air today for Kumakogen, 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 Kumakogen is classified as Good today. The primary pollutant identified is PM2.5, fine particulate matter measured by the monitoring system.

The latest measurement shows a PM2.5 concentration of 2.0 µg/m³ based on one valid reading reported through OpenAQ. 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 current station data listed for this city is focused on particulate matter (PM). Only one monitoring location contributes to the dataset, and it reports a single pollutant: PM2.5 measured at 2.0 µg/m³. The observation comes from the site at 上浮穴郡久万町菅生2番耕地280-38 and was last updated on 2026-02-10 22:00 UTC, which falls within the “updated within 3 days” freshness window.

Because the dataset contains just a single row, there is no range of values to compare; the minimum, median and maximum are all identical at 2.0 µg/m³, and both the 10th and 90th percentiles match this figure as well. This means the available data provides a very narrow snapshot rather than a broader picture of air quality across Kumakogen. With only one station reporting recent measurements, spatial coverage is limited, so conditions elsewhere in the city may differ from what this single reading shows.

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 current reading for Kumakogen is based on a single valid measurement and was updated within 3 days, with the latest data recorded at 2026‑02‑10 22:00 UTC. This snapshot reflects conditions at that specific time; air quality can differ across neighborhoods and change throughout the day, so values may not represent the entire city at any given moment.

OpenAQ station rows