Air quality in Iwanuma, Japan today
Mr. Duck’s Air Quality Score
Good air today for Iwanuma, 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 Iwanuma is classified as Good today. The primary pollutant identified is PM2.5 (fine particles).
Measurements show a PM2.5 concentration of 4.0 µg/m³ based on five valid observations recorded by OpenAQ. This indicates that the current level of fine particulate matter falls within the range associated with the Good category. 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 Iwanuma dataset contains measurements for five pollutants – nitrogen monoxide (NO), nitrogen dioxide (NO₂), combined nitrogen oxides (NOX), fine particulate matter (PM2.5) and sulfur dioxide (SO₂). All of these come from a single monitoring location at 岩沼市中央３丁目１－１３, so the city’s air‑quality picture is based on one row of data rather than a network of stations.
Each pollutant shows a single value that also serves as its minimum, median and maximum for the period covered. NO registers 0.0 ppm, while both NO₂ and NOX are recorded at 0.004 ppm. PM2.5 is measured at 4.0 µg/m³ and SO₂ at 0.001 ppm. Because there is only one observation per pollutant, the inter‑percentile spread (10th to 90th percentile) is zero; the data therefore do not reveal any variability over time or across locations within Iwanuma.
The most recent timestamp for every measurement is 2026-02-10 22:00 UTC, and all five pollutants share this update time. This means the dataset is uniformly fresh, with no older or unknown‑date entries. However, the reliance on a single sensor limits geographic coverage – conditions elsewhere in the city may differ from those at the central address. Users should keep in mind that while the numbers are current, they represent only one point source and do not capture spatial variation across Iwanuma.
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 have been updated within three days, most recently on 2026‑02‑10 at 22:00 UTC. While these figures give a current overview of Iwanuma’s air quality, conditions can differ across neighborhoods and change throughout the day, so this snapshot may not represent every location or moment in the city.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| 岩沼市中央３丁目１－１３ | no | 0.0 | ppm | 2026-02-10 22:00 UTC |
| 岩沼市中央３丁目１－１３ | no2 | 0.004 | ppm | 2026-02-10 22:00 UTC |
| 岩沼市中央３丁目１－１３ | nox | 0.004 | ppm | 2026-02-10 22:00 UTC |
| 岩沼市中央３丁目１－１３ | pm25 | 4.0 | µg/m³ | 2026-02-10 22:00 UTC |
| 岩沼市中央３丁目１－１３ | so2 | 0.001 | ppm | 2026-02-10 22:00 UTC |