Air quality in Hwasun-gun, South Korea today

Mr. Duck’s Air Quality Score

Moderate air today for Hwasun-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 in Hwasun‑gun is currently classified as Moderate. The primary pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 concentration of 19.0 µg/m³ and a PM10 level of 23.0 µg/m³, based on twelve valid observations collected through OpenAQ.

These values reflect the present conditions without implying any health implications or recommended actions. 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 Hwasun‑gun contains measurements from two monitoring sites that together provide eighteen individual data rows. All six pollutants tracked by OpenAQ—carbon monoxide (CO), nitrogen dioxide (NO₂, reported in ppm), ozone (O₃), particulate matter 10 µm or smaller (PM10), fine particulate matter 2.5 µm or smaller (PM2.5) and sulfur dioxide (SO₂)—are represented. The most recent reading for each pollutant was recorded on 2026‑02‑10 at 18:00 UTC, and every value is flagged as having been updated within the past seven days, indicating a uniformly fresh snapshot of air quality across the city.

The observed concentrations show modest variability. CO values range from 0.19 to 0.56 ppm with a median of 0.28 ppm; NO₂ spans 0.0025–0.0225 ppm (median 0.003 ppm); O₃ varies between 0.0027 and 0.0326 ppm, centering around 0.0207 ppm. Particulate matter exhibits a tighter spread: PM10 measurements fall from 19 to 28 µg/m³ with a median of 23 µg/m³, while PM2.5 stays between 13 and 19 µg/m³, median 13 µg/m³. SO₂ is the least variable, recorded from 0.0015 to 0.0021 ppm with both minimum and median at 0.0015 ppm.

Because the data come from only two stations, spatial coverage is limited; conditions can differ in other parts of Hwasun‑gun that are not directly sampled. Nonetheless, the dataset provides a recent, comprehensive view of all six key pollutants, offering a clear baseline for understanding current air quality levels in the areas monitored.

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 Hwasun‑gun is based on twelve valid measurements and was refreshed within three days, with the latest update recorded at 2026‑02‑10 18:00 UTC. This snapshot reflects conditions captured at that time; however, air quality can vary across different neighborhoods and moments throughout the day, so actual exposure may differ from what is displayed here.

OpenAQ station rows