Air quality in Kasaoka, Japan today

Mr. Duck’s Air Quality Score

Moderate air today for Kasaoka, 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 Kasaoka is assessed as Moderate today. The primary pollutant identified is PM2.5 (fine particles).

Measurements show a PM2.5 concentration of 15.0 µg/m³ based on four valid observations 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 dataset for Kasaoka contains a single monitoring location, identified as 笠岡市茂平２８０, which supplies the full set of four pollutants tracked on this page: nitrogen monoxide (NO), nitrogen dioxide (NO2), total nitrogen oxides (NOX) and fine particulate matter (PM2.5). Because there is only one row in the source table, each pollutant is represented by a single measurement rather than an average across multiple sites.

All four readings were last refreshed on 2026-02-10 at 22:00 UTC, placing them well within the “updated within three days” freshness window. The NO and NO2 values are identical at 0.012 ppm, while NOX – the sum of those two gases – is recorded as 0.024 ppm, exactly double the individual components. PM2.5 is reported at 15.0 µg/m³. For each pollutant the minimum, median and maximum values are the same (NO/NO2: 0.012 ppm; NOX: 0.024 ppm; PM2.5: 15.0 µg/m³), indicating that only one observation is available rather than a range of measurements over time.

Because the coverage consists of just this single station, the data cannot capture spatial variation across Kasaoka, and the lack of multiple timestamps means no trend or variability can be shown. The information is current but limited to one point in space and time; therefore, while it provides an up‑to‑date snapshot of the four pollutants at that location, broader city‑wide conditions may differ depending on where and when measurements are taken.

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 data reflect four valid measurements and were updated within 3 days, with the latest reading recorded at 2026‑02‑10T22:00:00+00:00. These values provide a recent snapshot of air quality across Kasaoka, but conditions can differ by specific location and time of day within the city, so individual experiences may vary from the reported averages.

OpenAQ station rows