Air quality in Gunsan-si, South Korea today

Mr. Duck’s Air Quality Score

Moderate air today for Gunsan-si, South Korea

⚠️ 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 Gunsan‑si is currently classified as Moderate. The primary pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 concentration of 28.0 µg/m³ and a PM10 level of 29.0 µg/m³, based on 42 valid observations.

Data is 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 air‑quality feed for Gunsan‑si currently draws from seven monitoring stations that report six key pollutants: carbon monoxide (CO), nitrogen dioxide (NO₂), ozone (O₃), particulate matter ≤ 10 µm (PM10), particulate matter ≤ 2.5 µm (PM2.5) and sulfur dioxide (SO₂). All of the latest observations were recorded on 2026‑02‑10 at 18:00 UTC, so the data are fresh within the past week for every pollutant.

Across the seven stations the measured values show a modest spread. CO concentrations range from 0.27 to 0.56 ppm with a median of 0.39 ppm; NO₂ varies between 0.0065 and 0.0237 ppm, centering around 0.0202 ppm; O₃ is observed from 0.0032 up to 0.0292 ppm, with a typical level near 0.0163 ppm. For the particulates, PM10 values lie between 18 and 45 µg/m³ (median 27 µg/m³) while PM2.5 spans 15 to 39 µg/m³ (median 25 µg/m³). SO₂ is recorded from 0.0013 to 0.0037 ppm, with a median of 0.0021 ppm.

The dataset includes a single recent reading for each pollutant at the 사정동 site (CO 0.33 ppm, NO₂ 0.0237 ppm, O₃ 0.0032 ppm, PM10 29.0 µg/m³, PM2.5 28.0 µg/m³, SO₂ 0.0025 ppm). Because only seven stations contribute, spatial coverage is limited and conditions can differ across the city. Nonetheless, the timestamps indicate that all reported values are up‑to‑date as of early February 2026, providing a current snapshot of Gunsan‑si’s air quality across the listed pollutants.

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 for Gunsan‑si is based on 42 valid measurements and was refreshed recently, with the latest update recorded at 2026‑02‑10T18:00:00+00:00 (Updated within 3 days). This snapshot reflects conditions captured across the monitoring network at that time. Air quality can vary by location and time within the city, so values may differ from what you experience locally.

OpenAQ station rows