Air quality in Matsubara, Japan today
Mr. Duck’s Air Quality Score
Moderate air today for Matsubara, 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 Matsubara is currently classified as Moderate. The primary pollutant identified for today is PM2.5 (fine particles).
Measurements from four valid monitoring stations show a PM2.5 concentration of 20.0 µg/m³. 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
Matsubara’s open‑air quality feed contains four measured pollutants: nitrogen monoxide (NO), nitrogen dioxide (NO₂), total nitrogen oxides (NOX) and fine particulate matter (PM2.5). All data come from a single monitoring location at 松原市阿保１－１６－３, so the dataset consists of one row per pollutant. The most recent update for each parameter was recorded on 2026‑02‑10 at 22:00 UTC, meaning the latest values are less than three days old.
The reported concentrations are all identical across the sampling period: NO is consistently 0.006 ppm, NO₂ stays at 0.022 ppm, and NOX registers 0.028 ppm. For PM2.5 the measurement is a steady 20.0 µg/m³. Because each pollutant has only one recorded value, the minimum, median, maximum, 10th percentile and 90th percentile are all the same, indicating no observed variability in this snapshot.
With just one monitoring site, spatial coverage across Matsubara is limited; conditions elsewhere in the city may differ from those captured at this point. The data set does not contain any older or unknown‑timestamp entries, so while the timestamps are fresh, the lack of multiple stations means the picture is narrow rather than comprehensive.
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, having been updated within three days (last update 2026‑02‑10T22:00:00+00:00). This snapshot reflects conditions at the time of collection; air quality can differ across neighborhoods and change throughout the day, so values may not represent every location or moment in Matsubara.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| 松原市阿保１－１６－３ | no | 0.006 | ppm | 2026-02-10 22:00 UTC |
| 松原市阿保１－１６－３ | no2 | 0.022 | ppm | 2026-02-10 22:00 UTC |
| 松原市阿保１－１６－３ | nox | 0.028 | ppm | 2026-02-10 22:00 UTC |
| 松原市阿保１－１６－３ | pm25 | 20.0 | µg/m³ | 2026-02-10 22:00 UTC |