Air quality in Isehara, Japan today
Mr. Duck’s Air Quality Score
Good air today for Isehara, 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 Isehara today is rated Good. The primary pollutant identified is PM2.5, with a measured concentration of 2.0 µg/m³ based on four valid observations.
Data are shown via OpenAQ and reflect the current monitoring results for this location. 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 Isehara contains measurements for four pollutants – nitrogen monoxide (NO), nitrogen dioxide (NO2), total nitrogen oxides (NOX) and fine particulate matter (PM2.5). All four are reported from a single monitoring site located at 伊勢原市大住台１－１－１, so the city’s coverage consists of one station providing one row per pollutant.
Each pollutant shows an identical freshness: the most recent update was recorded on 2026‑02‑10 22:00 UTC and is flagged as “Updated within 3 days”. Because there are no older or unknown timestamps in the file, the data can be described as fully current for the reporting period. The values themselves are extremely consistent – the minimum, median, maximum, 10th percentile and 90th percentile are all identical for each pollutant. NO registers at 0.004 ppm, NO2 at 0.005 ppm, NOX at 0.009 ppm and PM2.5 at 2.0 µg/m³. This lack of spread indicates that only a single measurement snapshot is available rather than a range of observations over time.
With just one location feeding all four pollutant streams, the dataset does not capture spatial variability across Isehara. While the timestamps are recent, the limited number of rows means the picture of air quality is narrow; conditions elsewhere in the city or at other times may differ from what these point‑in‑time values show.
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 four valid measurements and is updated within 3 days, with the latest reading recorded on 2026‑02‑10 at 22:00 UTC. This snapshot provides a current view of Isehara’s air quality but conditions can differ across neighborhoods and change throughout the day, so values may not represent every location or moment in the city.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| 伊勢原市大住台１－１－１ | no | 0.004 | ppm | 2026-02-10 22:00 UTC |
| 伊勢原市大住台１－１－１ | no2 | 0.005 | ppm | 2026-02-10 22:00 UTC |
| 伊勢原市大住台１－１－１ | nox | 0.009 | ppm | 2026-02-10 22:00 UTC |
| 伊勢原市大住台１－１－１ | pm25 | 2.0 | µg/m³ | 2026-02-10 22:00 UTC |