Air quality in Izumisano, Japan today

Mr. Duck’s Air Quality Score

Moderate air today for Izumisano, 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 Izumisano today falls into the Moderate category. The primary pollutant identified is PM2.5 (fine particles), with a measured concentration of 22.0 µg/m³ based on eight valid observations reported through OpenAQ.

Data for other pollutants are not available, and no additional particulate measurements such as PM10 were provided. 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 Izumisano contains measurements of four pollutants – nitrogen monoxide (NO), nitrogen dioxide (NO₂), total nitrogen oxides (NOX) and fine particulate matter (PM2.5). All eight recorded rows come from two monitoring stations, each providing a full set of these four variables. The most recent observations were all logged on 2026-02-10 at 22:00 UTC, which the source notes as having been updated within the past three days, so the data are currently fresh for every pollutant.

Across the eight rows the NO values vary from a low of 0.002 ppm to a high of 0.007 ppm, with a median of about 0.0045 ppm and the middle 80 % of readings falling between roughly 0.0025 ppm and 0.0065 ppm. NO₂ is constant at 0.023 ppm in every record, giving a single‑point picture for that gas. NOX shows a slightly broader spread, ranging from 0.025 ppm to 0.030 ppm; the median sits near 0.0275 ppm and the 10th–90th percentile band runs from about 0.0255 ppm to 0.0295 ppm. PM2.5 concentrations are clustered tightly as well, moving between 21.0 µg/m³ and 22.0 µg/m³, with a median of 21.5 µg/m³ and the central 80 % of values from roughly 21.1 µg/m³ to 21.9 µg/m³.

Because every pollutant is reported by both stations and all timestamps are recent, the dataset offers a contemporaneous snapshot rather than a long‑term trend. However, the uniformity of NO₂ and the narrow ranges for PM2.5 suggest limited variability in those measurements during the sampled period, while NO shows a modest spread that could reflect short‑term fluctuations at the two sites.

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 eight valid measurements and is updated within 3 days, with the most recent reading recorded on 2026‑02‑10 at 22:00 UTC. This snapshot provides a current view of air quality in Izumisano, 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