Air quality in Gwangju-si, South Korea today

Mr. Duck’s Air Quality Score

Unhealthy air today for Gwangju-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 today in Gwangju‑si is classified as Unhealthy. The primary pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 concentration of 59.0 µg/m³ and a PM10 concentration of 77.0 µg/m³, based on 18 valid observations.

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 dataset for Gwangju‑si contains measurements from three monitoring stations, giving a total of twenty‑four individual rows of data. All six key pollutants are represented: carbon monoxide (CO), nitrogen dioxide (NO₂), ozone (O₃), particulate matter 10 µm or less (PM10), fine particulate matter 2.5 µm or less (PM2.5) and sulfur dioxide (SO₂). The most recent update for every pollutant was recorded on 2026‑02‑10 at 18:00 UTC, so the newest values are all fresh within the last seven days. In total, eighteen rows were logged in the past three days, while six rows are older than a week; no data are missing or marked as unknown.

Across the pollutants the observed ranges show modest variation. CO levels span from 0.57 ppm up to a peak of 0.94 ppm, with a median near 0.69 ppm; NO₂ varies between 0.0153 ppm and 0.038 ppm, centering around 0.029 ppm. Ozone is low, ranging from 0.0008 ppm to 0.0218 ppm, with most values clustered close to the median of 0.001 ppm. Particulate matter shows broader spread: PM10 ranges from 34 µg/m³ to 77 µg/m³ (median 68 µg/m³), while PM2.5 runs between 25 µg/m³ and 59 µg/m³ (median 51 µg/m³). Sulfur dioxide is the most stable, staying within a narrow band of 0.0021‑0.0023 ppm and a median of 0.0022 ppm.

The data illustrate that while all six pollutants are captured, the amount of recent information differs slightly among them. CO, NO₂, O₃, PM10, PM2.5 and SO₂ each have at least one observation from the latest timestamp, but the overall number of rows per pollutant is limited to the three stations, so spatial coverage is modest. Because measurements are taken at only a few points, conditions can differ across neighborhoods and times of day, and the dataset’s age distribution—half of the rows older than a week—means that some historical variability is not reflected in the most current snapshot.

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 18 valid measurements and is updated within 3 days, with the latest values recorded at 2026‑02‑10T18:00:00+00:00. While these figures provide a current overview of Gwangju‑si’s air quality, conditions can differ across neighborhoods and change throughout the day, so this snapshot may not represent every location or moment within the city.

OpenAQ station rows