Air quality in Echizen, Japan today
Mr. Duck’s Air Quality Score
Good air today for Echizen, 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 Echizen is classified as Good today. The primary pollutant identified is PM2.5 (fine particles).
Measurements show a PM2.5 concentration of 2.0 µg/m³ based on four valid observations recorded by OpenAQ. This indicates that the fine‑particle level is 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 dataset for Echizen contains measurements of four pollutants – nitrogen monoxide (NO), nitrogen dioxide (NO₂), total nitrogen oxides (NOX) and fine particulate matter (PM2.5). All four are recorded at a single monitoring site located at 越前市定友２１－５－１, so the city’s coverage in this snapshot is limited to one station and four rows of data.
The most recent values were uploaded on 2026‑02‑10 22:00 UTC, which falls within the “updated within three days” freshness window for every pollutant. For NO the recorded range is flat at 0.0 ppm, with a minimum, median and maximum all equal to zero. Both NO₂ and NOX show identical statistics: a single value of 0.002 ppm that serves as the minimum, median and maximum, indicating no observed variation across the reporting period. PM2.5 is reported in micrograms per cubic metre, with a consistent reading of 2.0 µg/m³ for its minimum, median and maximum.
Because the data come from only one location, there is no spatial spread to illustrate how air quality might differ across other parts of Echizen. The uniformity of the numbers also means there is no observable range or distribution for any of the pollutants; each metric is represented by a single point value rather than a set of varied readings. Consequently, while the timestamps are recent, the dataset provides a very narrow snapshot of conditions at one address and does not capture broader temporal or geographic fluctuations that could occur elsewhere in 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 for Echizen is based on four valid measurements and was updated within 3 days, with the latest reading recorded at 2026‑02‑10T22:00:00+00:00. This snapshot reflects conditions at a specific time and location; air quality can vary across different parts of the city and change throughout the day.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| 越前市定友２１－５－１ | no | 0.0 | ppm | 2026-02-10 22:00 UTC |
| 越前市定友２１－５－１ | no2 | 0.002 | ppm | 2026-02-10 22:00 UTC |
| 越前市定友２１－５－１ | nox | 0.002 | ppm | 2026-02-10 22:00 UTC |
| 越前市定友２１－５－１ | pm25 | 2.0 | µg/m³ | 2026-02-10 22:00 UTC |