Air quality in Higashiagatsuma, Japan today
Mr. Duck’s Air Quality Score
Good air today for Higashiagatsuma, 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 Higashiagatsuma is rated Good today. The primary pollutant identified is PM2.5, fine particulate matter measured by the monitoring network.
Measurements show a PM2.5 concentration of 4.0 µg/m³ based on five valid observations reported through OpenAQ. No other pollutants are highlighted 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 Higashiagatsuma contains a single monitoring location – the station at 吾妻郡東吾妻町原町５２３０ – and provides five measured pollutants: nitrogen monoxide (NO), nitrogen dioxide (NO2), total nitrogen oxides (NOX), fine particulate matter (PM2.5) and sulfur dioxide (SO2). All rows were recorded on the same day, with the most recent timestamp of 2026-02-10 22:00 UTC, so the data are fresh within the last three days for every pollutant.
Across the five pollutants the observed values show very little variation because each metric has only one reported figure. NO is consistently 0.0 ppm, while both NO2 and NOX register a uniform 0.003 ppm. SO2 also appears at a single level of 0.001 ppm. The particulate measurement stands out as the only non‑gas value, with PM2.5 recorded at exactly 4.0 µg/m³. Because each pollutant’s minimum, median, maximum, and the 10th–90th percentiles are identical, there is no spread to describe; the dataset essentially reflects a snapshot rather than a range of conditions.
Having just one station means spatial coverage for Higashiagatsuma is limited – any variation in air quality across different neighborhoods or micro‑environments cannot be captured by this source. The uniformity of timestamps indicates that all five pollutants were updated together, so there are no older or unknown entries to skew the picture. Users should keep in mind that while the data are current, they represent a single point measurement and may not reflect broader city‑wide conditions at other times or locations.
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 is updated within 3 days, with the most recent reading recorded at 2026‑02‑10T22:00:00+00:00. While this provides a current overview of Higashiagatsuma’s air quality, conditions can differ across neighborhoods and change throughout the day, so the figures represent only a snapshot rather than a comprehensive view of the entire city.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| 吾妻郡東吾妻町原町５２３０ | no | 0.0 | ppm | 2026-02-10 22:00 UTC |
| 吾妻郡東吾妻町原町５２３０ | no2 | 0.003 | ppm | 2026-02-10 22:00 UTC |
| 吾妻郡東吾妻町原町５２３０ | nox | 0.003 | ppm | 2026-02-10 22:00 UTC |
| 吾妻郡東吾妻町原町５２３０ | pm25 | 4.0 | µg/m³ | 2026-02-10 22:00 UTC |
| 吾妻郡東吾妻町原町５２３０ | so2 | 0.001 | ppm | 2026-02-10 22:00 UTC |