Air quality in Daito, Japan today
Mr. Duck’s Air Quality Score
Moderate air today for Daito, 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 Daito is currently classified as Moderate. The main pollutant identified is PM2.5, with a measured concentration of 18.0 µg/m³ based on four valid observations.
These values are presented through OpenAQ data. 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 Daito includes four measured pollutants – nitrogen monoxide (NO), nitrogen dioxide (NO₂), total nitrogen oxides (NOX) and fine particulate matter (PM2.5). All of these come from a single monitoring location at 大東市谷川１－１－１, so the city’s coverage in this snapshot is limited to one station reporting each pollutant. The most recent reading for every compound was recorded on 2026-02-10 at 22:00 UTC, which falls within the “updated within three days” freshness window, indicating that the available data are current as of early February.
Because there is only one observation per pollutant, the statistical spread is essentially non‑existent: the minimum, median and maximum values are identical for each metric. NO registers at 0.004 ppm, NO₂ at 0.024 ppm, NOX at 0.028 ppm and PM2.5 at 18.0 µg/m³. The percentile figures (10th and 90th) match these same numbers, confirming that no variability is captured in this snapshot. Consequently, the dataset cannot reveal any temporal fluctuations or spatial differences across Daito; it simply provides a single point‑in‑time measurement for each pollutant.
In practical terms, users should be aware that the current picture of air quality in Daito is based on one monitoring site and reflects conditions at a specific moment rather than an ongoing trend. While the data are fresh, the lack of multiple stations or repeated measurements means that conditions elsewhere in the city or changes over the following days are not represented here. For a more comprehensive understanding, additional sensors or later updates would be needed to capture broader spatial coverage and temporal dynamics.
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 Daito reflects four valid measurements and was refreshed recently, with the latest update recorded on 2026‑02‑10 at 22:00 UTC; it is therefore “Updated within 3 days.” This snapshot provides a brief view of current conditions, but air quality can differ across neighborhoods and change throughout the day, so values may not represent every location or moment in the city.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| 大東市谷川１－１－１ | no | 0.004 | ppm | 2026-02-10 22:00 UTC |
| 大東市谷川１－１－１ | no2 | 0.024 | ppm | 2026-02-10 22:00 UTC |
| 大東市谷川１－１－１ | nox | 0.028 | ppm | 2026-02-10 22:00 UTC |
| 大東市谷川１－１－１ | pm25 | 18.0 | µg/m³ | 2026-02-10 22:00 UTC |