Air quality in Iida, Japan today
Mr. Duck’s Air Quality Score
Good air today for Iida, 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 Iida is currently classified as Good. The main pollutant identified is PM2.5, with a measured concentration of 9.0 µg/m³ based on four valid observations reported through OpenAQ.
These measurements indicate that particulate levels are 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 Iida dataset contains four pollutant measurements collected from a single monitoring site at 飯田市追手町２－６７８. The available pollutants are nitrogen monoxide (NO), nitrogen dioxide (NO₂), total nitrogen oxides (NOX) and fine particulate matter (PM2.5). All four rows were last updated on 2026-02-10 22:00 UTC, which the source classifies as “updated within 3 days,” so the information reflects very recent conditions for each pollutant.
Across the dataset the observed values are tightly clustered. NO is recorded at a constant 0.0 ppm, with both its minimum and maximum equal to zero, indicating no detectable concentration at the time of measurement. NO₂ and NOX each show a single value of 0.005 ppm; their minima, maxima, medians and the 10th‑ and 90th‑percentile points are all identical, suggesting little variation in these gases during the sampling period. PM2.5 is reported at 9.0 µg/m³, again with a uniform set of statistics (min = med = max = 9.0). Because each pollutant has only one recorded value, there is no spread to describe and the median equals the observed measurement for every case.
With just one monitoring location, the dataset provides a snapshot rather than a city‑wide picture; conditions can differ in other neighborhoods or at other times of day. Nonetheless, the data are current, cover the four key pollutants listed above, and each pollutant’s record is complete with consistent units (ppm for gases, µg/m³ for particles). This limited but up‑to‑date set gives a clear baseline of Iida’s air quality at the specified site on 2026-02-10.
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 for Iida reflects four valid measurements and was updated within three days, with the latest refresh recorded at 2026‑02‑10 22:00 UTC. While these figures provide a current snapshot of air quality across the city, conditions can differ by specific neighbourhoods and change throughout the day, so local variations may exist beyond what is displayed here.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| 飯田市追手町２－６７８ | no | 0.0 | ppm | 2026-02-10 22:00 UTC |
| 飯田市追手町２－６７８ | no2 | 0.005 | ppm | 2026-02-10 22:00 UTC |
| 飯田市追手町２－６７８ | nox | 0.005 | ppm | 2026-02-10 22:00 UTC |
| 飯田市追手町２－６７８ | pm25 | 9.0 | µg/m³ | 2026-02-10 22:00 UTC |