Air quality in Imsil-gun, South Korea today

Mr. Duck’s Air Quality Score

Moderate air today for Imsil-gun, 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 today in Imsil‑gun is classified as Moderate. The main pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 reference value of 15.0 and a PM10 reference value of 22.0, based on 18 valid observations collected via OpenAQ.

These figures reflect the current assessment for the area without additional interpretation. 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 Imsil‑gun includes six measured 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 data come from three monitoring stations, each providing a single recent record for every pollutant. The newest observations were all recorded on 2026‑02‑10 at 18:00 UTC, so the dataset is uniformly fresh within the last seven days.

Across the three sites the concentrations show modest variation. CO values range from 0.24 to 0.35 ppm with a median of 0.27 ppm; NO₂ spans 0.0035‑0.0139 ppm and centers around 0.0047 ppm; O₃ varies between 0.0126 and 0.0226 ppm, typically near 0.0187 ppm. For the particulates, PM10 is recorded between 17 and 22 µg/m³ with a median of 18 µg/m³, while PM2.5 lies from 13 to 17 µg/m³, most often at 15 µg/m³. SO₂ measurements are low, ranging from 0.0012 to 0.0029 ppm and averaging 0.0025 ppm.

Because each pollutant is represented by only three recent rows, the coverage is limited but consistent in timing. The spread between the 10th and 90th percentiles is relatively narrow for all species, indicating that the current snapshot does not capture large fluctuations that might occur at other times or locations within Imsil‑gun. Users should keep in mind that conditions can differ across neighborhoods and over longer periods, as this dataset reflects a single moment rather than continuous monitoring.

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 Imsil‑gun is based on 18 valid measurements and has been updated within 3 days, with the latest refresh recorded at 2026‑02‑10T18:00:00+00:00. This snapshot reflects conditions measured at specific monitoring points and times; air quality can differ across neighborhoods and throughout the day, so values may not represent every location or moment in the city.

OpenAQ station rows