Air quality in Amakusa, Japan today
Mr. Duck’s Air Quality Score
Good air today for Amakusa, 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 Amakusa is classified as Good today. The primary pollutant measured is PM2.5, fine particulate matter that is tracked by OpenAQ.
Measurements from four valid monitoring points show a PM2.5 concentration of 5.0 µg/m³. This indicates the level falls within the reference value used for assessment. 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 Amakusa dataset contains measurements for four pollutants – nitrogen monoxide (NO), nitrogen dioxide (NO₂), total nitrogen oxides (NOX) and fine particulate matter (PM2.5). All of these values come from a single monitoring location at 天草市字白鶴浜８９７－１５, so the city’s coverage is limited to one station but includes four distinct pollutant rows. The most recent timestamp for every parameter is 2026‑02‑10 22:00 UTC, which falls within the “updated within three days” freshness window, indicating that the data are currently very fresh.
Across the four pollutants the recorded values show no variation over time; each metric has a single observed value that also serves as its minimum, median and maximum. NO is consistently 0.0 ppm, while both NO₂ and NOX are measured at 0.002 ppm. PM2.5 registers a constant concentration of 5.0 µg/m³. Because each pollutant has only one data point, the spread (10th‑percentile to 90th‑percentile) is zero, meaning there is no observable range or fluctuation in the short term for this site.
Given that the dataset consists of just one monitoring location, it cannot capture spatial differences across Amakusa, and the lack of multiple readings over time limits insight into any day‑to‑day changes. Nevertheless, the information does provide a snapshot of current ambient levels for the listed pollutants at the specific address, with all values reported on the same recent date and time.
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 reflect four valid measurements and were updated within 3 days, with the latest reading recorded at 2026‑02‑10 22:00 UTC. This snapshot provides a brief view of current conditions; however, air quality can differ across neighborhoods and change throughout the day, so values may not represent every location or moment in Amakusa.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| 天草市字白鶴浜８９７－１５ | no | 0.0 | ppm | 2026-02-10 22:00 UTC |
| 天草市字白鶴浜８９７－１５ | no2 | 0.002 | ppm | 2026-02-10 22:00 UTC |
| 天草市字白鶴浜８９７－１５ | nox | 0.002 | ppm | 2026-02-10 22:00 UTC |
| 天草市字白鶴浜８９７－１５ | pm25 | 5.0 | µg/m³ | 2026-02-10 22:00 UTC |