Air quality in Minamisoma, Japan today
Mr. Duck’s Air Quality Score
Good air today for Minamisoma, 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 Minamisoma is classified as Good today. The primary pollutant measured is PM2.5, with a recorded concentration of 5.0 µg/m³ based on five valid observations from OpenAQ data.
Overall conditions meet the Good category criteria, and 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 Minamisoma includes five measured pollutants—nitric oxide (NO), nitrogen dioxide (NO₂), total nitrogen oxides (NOX), fine particulate matter (PM2.5) and sulfur dioxide (SO₂). All of these are reported from a single monitoring location at 南相馬市仲町２丁目１６５, so the station coverage for the city is limited to one row of data.
The most recent readings were recorded on 2026-02-10 22:00 UTC, and each pollutant’s timestamp matches this date, indicating that the information is fresh and was updated within the last three days. For NO, NO₂, NOX and SO₂ the values are all zero (0.0 ppm), while PM2.5 registers a constant 5.0 µg/m³. Because each pollutant’s minimum, median and maximum are identical, there is no observed variability in this snapshot; the spread for every metric is effectively zero.
Two practical points emerge from these numbers. First, because only one monitoring site contributes data, the figures represent conditions at that specific address and may not capture spatial differences across Minamisoma. Second, the uniformity of the values—especially the zeros for four gases—suggests either very low concentrations at the time of measurement or a lack of detection sensitivity; any change in air quality elsewhere in the city would not be reflected here until additional stations are added or the existing sensor records different levels.
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 five valid measurements and were updated within 3 days, with the most recent reading recorded at 2026‑02‑10T22:00:00+00:00. This snapshot reflects conditions at specific monitoring points and times; air quality can differ across neighborhoods and throughout the day, so values may not represent every location or moment in Minamisoma.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| 南相馬市仲町２丁目１６５ | no | 0.0 | ppm | 2026-02-10 22:00 UTC |
| 南相馬市仲町２丁目１６５ | no2 | 0.007 | ppm | 2026-02-10 22:00 UTC |
| 南相馬市仲町２丁目１６５ | nox | 0.007 | ppm | 2026-02-10 22:00 UTC |
| 南相馬市仲町２丁目１６５ | pm25 | 5.0 | µg/m³ | 2026-02-10 22:00 UTC |
| 南相馬市仲町２丁目１６５ | so2 | 0.0 | ppm | 2026-02-10 22:00 UTC |