Air quality in Higashimurayama, Japan today
Mr. Duck’s Air Quality Score
Moderate air today for Higashimurayama, 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 Higashimurayama is currently classified as Moderate. The primary pollutant identified for today is PM2.5 (fine particles).
Measurements show a PM2.5 concentration of 15.0 µg/m³, based on four valid observations recorded via 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 dataset for Higashimurayama contains measurements for four pollutants – nitrogen monoxide (NO), nitrogen dioxide (NO₂), combined nitrogen oxides (NOX) and fine particulate matter (PM2.5). All of these values come from a single monitoring site located at 東村山市本町１－１０先, so the city’s air‑quality picture is based on one set of observations rather than a network of stations.
Each pollutant shows an identical statistical profile because only one reading was recorded for each: NO is 0.015 ppm, NO₂ is 0.023 ppm, NOX is 0.038 ppm and PM2.5 is 15.0 µg/m³. The minimum, median, 10th percentile, 90th percentile and maximum are all the same, indicating no observed variation across time in this snapshot. Because there is only one row per pollutant, the data cannot reveal any intra‑day or day‑to‑day fluctuations.
The most recent update for every measurement was logged on 2026-02-10 22:00 UTC, which falls within a three‑day freshness window relative to today’s date (2026‑02‑13). This means the numbers are current, but the limited spatial coverage and single‑point nature of the record should be kept in mind when interpreting conditions across Higashimurayama. Residents may experience different values elsewhere in the city or at other times, as the available data does not capture such variability.
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 Higashimurayama is based on four valid measurements and was updated within three days, with the latest refresh recorded at 2026‑02‑10 22:00 UTC. This snapshot reflects conditions at a specific time and place; air quality can differ across neighborhoods and change throughout the day, so current levels may vary from what is displayed here.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| 東村山市本町１－１０先 | no | 0.015 | ppm | 2026-02-10 22:00 UTC |
| 東村山市本町１－１０先 | no2 | 0.023 | ppm | 2026-02-10 22:00 UTC |
| 東村山市本町１－１０先 | nox | 0.038 | ppm | 2026-02-10 22:00 UTC |
| 東村山市本町１－１０先 | pm25 | 15.0 | µg/m³ | 2026-02-10 22:00 UTC |