Air quality in Himi, Japan today
Mr. Duck’s Air Quality Score
Good air today for Himi, 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 Himi is classified as Good today. The primary pollutant identified is PM2.5, with a measured concentration of 7.0 µg/m³ based on four valid observations reported through OpenAQ.
This assessment reflects the current monitoring data without additional interpretation. 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 Himi dataset currently includes measurements for four key pollutants – nitrogen monoxide (NO), nitrogen dioxide (NO₂), total nitrogen oxides (NOX) and fine particulate matter (PM2.5). All of these are reported from a single monitoring location identified as 氷見市窪１２４１, so the city’s coverage consists of one station providing four separate pollutant rows.
The most recent data were uploaded on 2026-02-10 22:00 UTC, which falls within the “updated within three days” freshness window for every parameter. This means that, at the time of writing, the available values are all very current. For NO the reading is exactly zero (0.0 ppm), while both NO₂ and NOX show identical concentrations of 0.005 ppm. The PM2.5 measurement stands at 7.0 µg/m³. Because each pollutant has only a single recorded value, the minimum, median, maximum, as well as the 10th‑percentile and 90th‑percentile statistics are all identical to that one figure.
Given the limited spatial coverage – just one sensor site – the dataset cannot capture variations across different neighborhoods or micro‑environments within Himi. Nevertheless, the data are uniformly recent and complete for the four pollutants listed, with no missing or outdated entries. Users should keep in mind that conditions may differ elsewhere in the city, especially where local sources such as traffic or industry are present, but those differences are not reflected in the current dataset.
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 Himi reflects four valid measurements and was updated within three days, with the most recent reading recorded at 2026‑02‑10T22:00:00+00:00. These values represent a snapshot of current conditions; air quality can differ across neighborhoods and change throughout the day, so local variations may not be captured in this summary.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| 氷見市窪１２４１ | no | 0.0 | ppm | 2026-02-10 22:00 UTC |
| 氷見市窪１２４１ | no2 | 0.005 | ppm | 2026-02-10 22:00 UTC |
| 氷見市窪１２４１ | nox | 0.005 | ppm | 2026-02-10 22:00 UTC |
| 氷見市窪１２４１ | pm25 | 7.0 | µg/m³ | 2026-02-10 22:00 UTC |