Air quality in Iga, Japan today

Mr. Duck’s Air Quality Score

Moderate air today for Iga, 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 Iga is currently classified as Moderate. The primary pollutant identified for today is PM2.5 (fine particles).

Measurements show a PM2.5 concentration of 16.0 µg/m³ based on six valid observations reported through OpenAQ. 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 Iga includes measurements of five pollutants – nitrogen monoxide (NO), nitrogen dioxide (NO2), total nitrogen oxides (NOX), fine particulate matter (PM2.5) and sulphur dioxide (SO2). Across the city there are six recent rows of data coming from two monitoring stations, so each pollutant is represented by at most one location. All values were recorded on 2026-02-10 at 22:00 UTC, which means the newest information is less than three days old for every pollutant.

PM2.5 is the only metric reported in micrograms per cubic metre; the observed values range from a minimum of 11.0 µg/m³ to a maximum of 16.0 µg/m³, with a median of 13.5 µg/m³ and the central 80 % of readings falling between 11.5 and 15.5 µg/m³. The nitrogen‑related gases are all reported in parts per million and show a very narrow spread: NO is consistently 0.001 ppm, NO2 stays at 0.014 ppm, and NOX records 0.015 ppm across the single station that provides these data. Sulphur dioxide registers as 0.0 ppm, indicating no detectable concentration at the time of measurement.

Because each pollutant is captured by only one sensor location, the dataset does not reveal spatial variation within Iga; conditions can differ in other neighbourhoods or at later times. Nevertheless, the recent timestamps and the uniform reporting format give a clear snapshot of current air quality for the listed contaminants, with PM2.5 showing modest variability while the gaseous pollutants remain essentially constant across the available measurements.

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 current data for Iga are based on six valid measurements and were refreshed recently, with the latest update recorded on 2026‑02‑10 at 22:00 UTC; the dataset is therefore updated within three days. While this snapshot reflects overall conditions across the city, air quality can differ by specific location and time of day, so values may vary locally.

OpenAQ station rows