Air quality in Hagi, Japan today

Mr. Duck’s Air Quality Score

Moderate air today for Hagi, 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 Hagi is currently classified as Moderate. The primary pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 concentration of 12.0 µg/m³, based on one valid observation.

Data are shown via 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 current station data listed for this city is focused on particulate matter (PM). Only one monitoring location contributes to the dataset, reporting a single pollutant: PM2.5 measured in micrograms per cubic metre. The most recent reading was recorded at 2026-02-10 21:00 UTC and is classified as updated within three days, indicating relatively fresh information for this site.

All available values are identical across statistical summaries – the minimum, median, maximum, 10th percentile and 90th percentile all equal 12.0 µg/m³ at the address 萩市江向川添沖田５３１－１. Because there is just one row, there is no variation to describe and no older or unknown timestamps in this set. Consequently, while the data give a clear snapshot of PM2.5 at that specific point in time, they do not capture spatial differences across Hagi or changes over longer periods.

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 a single valid measurement for Hagi and was refreshed recently, with the latest update recorded on 2026‑02‑10 at 21:00 UTC; it is considered “Updated within 3 days.” This snapshot provides a momentary view of air quality and may not represent conditions across all neighborhoods or times of day, as concentrations can vary throughout the city.

OpenAQ station rows