Air quality in Kunitachi, Japan today

Mr. Duck’s Air Quality Score

Moderate air today for Kunitachi, 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 Kunitachi is currently classified as Moderate. The primary pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 concentration of 11.0 µg/m³, based on six valid observations collected via OpenAQ.

These data reflect the present conditions without interpretation or recommendation. 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 Kunitachi air‑quality record draws on a single monitoring site, identified as 国立市谷保６２０８, which supplies six separate pollutant rows. Those rows cover carbon monoxide (CO), nitric oxide (NO), nitrogen dioxide (NO₂), total oxides of nitrogen (NOX), fine particulate matter (PM2.5) and sulfur dioxide (SO₂). Because the dataset contains only one station, each pollutant is represented by a single measurement rather than a distribution across multiple locations.

All six pollutants were last reported on 2026‑02‑10 at 22:00 UTC, which falls within the “updated within three days” freshness window for this city’s data. The values are uniform across the statistical fields: CO registers 0.3 ppm, NO 0.014 ppm, NO₂ 0.024 ppm, NOX 0.038 ppm, PM2.5 11.0 µg/m³ and SO₂ 0.001 ppm. Because each pollutant has only one recorded point, the minimum, median, maximum, 10th percentile and 90th percentile are identical, indicating no observed variability in this snapshot.

With just a single monitoring location, the dataset cannot capture spatial differences that may exist across Kunitachi, and any short‑term fluctuations after the last update will not be reflected until a new reading is uploaded. Nonetheless, the current record provides a complete set of six common air‑quality constituents, all refreshed within the past three days, giving a clear but limited picture of the city’s ambient conditions at that moment.

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 was refreshed recently, with the latest update recorded on 2026‑02‑10 at 22:00 UTC; it is considered “Updated within 3 days.” This snapshot represents conditions captured across Kunitachi at that time, but air quality can differ by specific location and moment within the city, so values may vary locally.

OpenAQ station rows