Air quality in Kesennuma, Japan today
Mr. Duck’s Air Quality Score
Good air today for Kesennuma, 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 Kesennuma is rated Good today. The primary pollutant identified is PM2.5, with a measured concentration of 5.0 µg/m³ based on five valid observations.
Data are shown via OpenAQ. 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 Kesennuma includes five measured pollutants – nitrogen monoxide (NO), nitrogen dioxide (NO₂), combined nitrogen oxides (NOX), fine particulate matter (PM2.5) and sulfur dioxide (SO₂). Each pollutant is represented by a single monitoring row, so the city’s current coverage consists of one sensor location at 気仙沼市笹ヶ陣３－１. All five rows were last updated on 2026-02-10 22:00 UTC, which falls within the “updated within three days” freshness window, indicating that the most recent measurements are very current.
Across the five pollutants the recorded values show no variation over time: NO, NOX and SO₂ all read 0.0 ppm, while NO₂ registers a constant 0.003 ppm and PM2.5 remains steady at 5.0 µg/m³. For each pollutant the minimum, median, maximum, 10th percentile and 90th percentile are identical, meaning that only a single data point is available for each metric. This uniformity reflects the limited temporal depth of the dataset rather than any underlying stability in air quality.
Because the city’s monitoring network is represented by just one station, spatial differences within Kesennuma cannot be captured in this snapshot. The freshness of the timestamps assures that the numbers are up‑to‑date, but the lack of multiple rows or historic records means the data provide only a narrow view of current conditions at a single point location. Users should keep in mind that air quality can vary across neighborhoods and over longer periods, which is not reflected in this limited dataset.
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 was updated within three days, with the latest refresh recorded at 2026‑02‑10 22:00 UTC. This snapshot provides a recent view of Kesennuma’s air quality but remember conditions can change across different neighborhoods and times of day, so actual exposure may vary from what is displayed here.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| 気仙沼市笹ヶ陣３－１ | no | 0.0 | ppm | 2026-02-10 22:00 UTC |
| 気仙沼市笹ヶ陣３－１ | no2 | 0.003 | ppm | 2026-02-10 22:00 UTC |
| 気仙沼市笹ヶ陣３－１ | nox | 0.003 | ppm | 2026-02-10 22:00 UTC |
| 気仙沼市笹ヶ陣３－１ | pm25 | 5.0 | µg/m³ | 2026-02-10 22:00 UTC |
| 気仙沼市笹ヶ陣３－１ | so2 | 0.0 | ppm | 2026-02-10 22:00 UTC |