Air quality in Kiyose, Japan today

Mr. Duck’s Air Quality Score

Moderate air today for Kiyose, Japan

⚠️ This website is currently under active development. Some data may be incomplete or temporarily inaccurate. For health-critical decisions, please verify information through official government or environmental sources.

Categories follow US EPA AQI breakpoints for PM (estimate from latest valid measurements; this project does not compute EPA NowCast/24-hour AQI yet).

This friendly indicator summarizes the latest city readings. For health guidance, please see: EPA AirNow or WHO.

Air quality today

The air quality in Kiyose is currently classified as Moderate. The main pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 concentration of 13.0 µg/m³, based on six valid observations reported through OpenAQ.

These data reflect the present conditions without additional interpretation. 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 Kiyose contains measurements of six pollutants – carbon monoxide (CO), nitrogen oxide (NO), nitrogen dioxide (NO₂), total nitrogen oxides (NOX), fine particulate matter (PM2.5) and sulfur dioxide (SO₂). All six readings come from a single monitoring site located at 清瀬市上清戸２－６－４１, giving a total of six data rows in the current snapshot.

Each pollutant was last recorded on 2026‑02‑10 at 22:00 UTC, which falls within the “updated within three days” freshness window. Because every value shares the same timestamp, the dataset reflects conditions at one moment rather than an ongoing time series. The reported numbers show no variation across the six rows: CO is consistently 0.3 ppm, NO stays at 0.002 ppm, NO₂ at 0.024 ppm, NOX at 0.026 ppm, PM2.5 remains 13.0 µg/m³ and SO₂ registers 0.0 ppm. Consequently, the minimum, median and maximum values are identical for each pollutant, indicating a lack of observed spread in this snapshot.

With only one monitoring location, the coverage is limited to that specific address, so city‑wide conditions may differ elsewhere or at other times. The data’s recency is good – all measurements are from less than three days ago – but the single‑point nature means there is no insight into temporal trends or spatial variability within Kiyose. Users should keep in mind that while these figures give a precise picture of air quality at the listed site on 2026‑02‑10, they do not capture broader fluctuations across the city.

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 six valid measurements and is marked as Updated within 3 days, with the most recent reading recorded at 2026‑02‑10T22:00:00+00:00. This snapshot provides a current view of air quality for Kiyose, but conditions can differ across neighborhoods and change throughout the day, so values may not represent every location or moment within the city.

OpenAQ station rows