Air quality in Higashiyamato, Japan today
Mr. Duck’s Air Quality Score
Moderate air today for Higashiyamato, 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 Higashiyamato is currently classified as Moderate. The primary pollutant identified is PM2.5, fine particulate matter that is being monitored across the city.
Measurements show a PM2.5 concentration of 10.0 µg/m³ based on four valid observations reported through OpenAQ. No PM10 reference value is available for this 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 air‑quality feed for Higashiyamato currently includes four measured pollutants – nitrogen monoxide (NO), nitrogen dioxide (NO₂), total nitrogen oxides (NOX) and fine particulate matter (PM2.5). All of the data come from a single monitoring site at 東大和市奈良橋４－５７３, so there is just one row of observations for each pollutant, giving a total of four recent records.
Each pollutant shows an identical freshness profile: the most recent reading was taken on 2026-02-10 22:00 UTC and the dataset notes that it was updated within three days. Because only one measurement exists per substance, the reported minimum, median, 10th percentile, 90th percentile and maximum values are all the same. NO registers at 0.001 ppm, NO₂ at 0.013 ppm, NOX at 0.014 ppm and PM2.5 at 10.0 µg/m³. This lack of variation means there is no observable spread or trend within the current snapshot.
With just one monitoring location, the coverage for Higashiyamato is limited; conditions can differ across neighborhoods and times of day that are not captured by this single set of values. The data are recent, but the narrow spatial sampling means the figures represent only the specific site at the recorded moment rather than a city‑wide picture.
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 are based on four valid measurements and were refreshed recently, with the latest update recorded at 2026‑02‑10T22:00:00+00:00 (Updated within 3 days). This snapshot reflects conditions measured at specific monitoring points; air quality can differ across neighborhoods and change throughout the day, so values may not represent every location or moment in Higashiyamato.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| 東大和市奈良橋４－５７３ | no | 0.001 | ppm | 2026-02-10 22:00 UTC |
| 東大和市奈良橋４－５７３ | no2 | 0.013 | ppm | 2026-02-10 22:00 UTC |
| 東大和市奈良橋４－５７３ | nox | 0.014 | ppm | 2026-02-10 22:00 UTC |
| 東大和市奈良橋４－５７３ | pm25 | 10.0 | µg/m³ | 2026-02-10 22:00 UTC |