Air quality in Futtsu, Japan today
Mr. Duck’s Air Quality Score
Good air today for Futtsu, 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 Futtsu is classified as Good today. The primary pollutant identified is PM2.5, with a measured concentration of 5.0 µg/m³ based on two valid observations reported through OpenAQ.
Overall conditions meet the Good category criteria, and no additional 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 data for Futtsu includes measurements of five pollutants – nitrogen monoxide (NO), nitrogen dioxide (NO₂), total nitrogen oxides (NOX), fine particulate matter (PM2.5) and sulfur dioxide (SO₂). All five are reported from a single monitoring location at 富津市下飯野１１３５, so the dataset represents one station row per pollutant.
The most recent readings for NO, NO₂ and NOX were recorded on 2026-01-16 07:00 UTC, while PM2.5 and SO₂ have newer timestamps from 2026-02-10 22:00 UTC, showing that the latter two pollutants are refreshed within the past three days. Across the dataset the observed values are very narrow: NO, NO₂, NOX and SO₂ each show a minimum, median and maximum of 0.0 ppm, indicating no detectable concentration at the time of measurement. PM2.5 is consistently reported as 5.0 µg/m³, with its 10th and 90th percentiles matching that same figure, so there is no observed variability in this metric either.
Because only one monitoring site contributes data, spatial coverage across Futtsu is limited; conditions elsewhere in the city may differ from those captured at this point. The timestamps also reveal an uneven update pattern: three gases have not been refreshed since mid‑January, whereas particulate matter and sulfur dioxide are more current. Consequently, while the dataset provides a clear snapshot of pollutant levels at a specific location, it does not capture broader temporal or geographic fluctuations within Futtsu.
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 two valid measurements and was updated within 3 days, with the latest reading recorded at 2026‑02‑10T22:00:00+00:00. This snapshot provides a brief view of current conditions; however, air quality can vary across different neighborhoods and times of day within Futtsu, so values may not represent every location or moment in the city.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| 富津市下飯野１１３５ | no | 0.0 | ppm | 2026-01-16 07:00 UTC |
| 富津市下飯野１１３５ | no2 | 0.0 | ppm | 2026-01-16 07:00 UTC |
| 富津市下飯野１１３５ | nox | 0.0 | ppm | 2026-01-16 07:00 UTC |
| 富津市下飯野１１３５ | pm25 | 5.0 | µg/m³ | 2026-02-10 22:00 UTC |
| 富津市下飯野１１３５ | so2 | 0.0 | ppm | 2026-02-10 22:00 UTC |