Air quality in Higashiomi, Japan today
Mr. Duck’s Air Quality Score
Moderate air today for Higashiomi, 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 Higashiomi is currently classified as Moderate. The primary pollutant identified is PM2.5 (fine particles).
Measurements show a PM2.5 concentration of 23.0 µg/m³, based on five 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 Higashiomi contains measurements for five pollutants – nitrogen monoxide (NO), nitrogen dioxide (NO₂), total nitrogen oxides (NOX), fine particulate matter (PM2.5) and sulfur dioxide (SO₂). All five compounds are represented by a single monitoring location, giving a total of five rows of data across the city. Each row was last refreshed on 2026‑02‑10 at 22:00 UTC, which falls within the “updated within three days” window, so the information is currently fresh for every pollutant.
Because there is only one active sensor, the reported values are identical for minimum, median and maximum across the board. NO registers a concentration of 0.001 ppm, NO₂ shows 0.015 ppm, NOX records 0.016 ppm, SO₂ also reads 0.001 ppm, and PM2.5 measures 23.0 µg/m³. The percentile statistics (10th and 90th) match these same figures, confirming that no variability is captured in the present dataset. This uniformity means the data describe a single point in space rather than a city‑wide spread, so conditions elsewhere in Higashiomi may differ from what is shown here.
Overall, the coverage is limited to one site and the values are static for the latest reporting period. While the timestamps indicate that the information is up‑to‑date, the lack of multiple stations or historical depth means the dataset cannot illustrate temporal trends or spatial differences within the city. Users should keep in mind that air quality can vary by neighborhood and time of day, and the figures presented represent only the conditions measured at the East Higashiomi Spring Town location on the most recent update.
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 reflects five valid measurements and was updated within three days, with the most recent reading recorded on 2026‑02‑10 at 22:00 UTC. This snapshot provides a current view of Higashiomi’s air quality, but conditions can differ across neighborhoods and change throughout the day, so local variations may not be captured in these figures.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| 東近江市春日町１－１５ | no | 0.001 | ppm | 2026-02-10 22:00 UTC |
| 東近江市春日町１－１５ | no2 | 0.015 | ppm | 2026-02-10 22:00 UTC |
| 東近江市春日町１－１５ | nox | 0.016 | ppm | 2026-02-10 22:00 UTC |
| 東近江市春日町１－１５ | pm25 | 23.0 | µg/m³ | 2026-02-10 22:00 UTC |
| 東近江市春日町１－１５ | so2 | 0.001 | ppm | 2026-02-10 22:00 UTC |