Air quality in Gwangju, South Korea today

Mr. Duck’s Air Quality Score

Moderate air today for Gwangju, 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 Gwangju is currently rated as Moderate. The primary pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 reference value of 27.0 µg/m³ and a PM10 reference value of 31.0 µg/m³, based on 72 valid observations collected through OpenAQ.

These figures reflect the present conditions without implying any trend or cause. 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

Gwangju’s air‑quality feed draws from 13 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 readings were recorded at 2026‑02‑10 18:00 UTC, so the data are fresh enough to reflect conditions within the past week.

For CO the most recent value is 0.49 ppm measured in 건국동; across the network the observed range spans from a low of 0.35 ppm up to 0.73 ppm with a median of 0.52 ppm, indicating modest variability among stations. NO₂ shows a tighter spread, with values ranging between 0.0119 and 0.0324 ppm and a median of 0.0214 ppm at the same site. O₃ concentrations are low overall, from 0.0019 to 0.0206 ppm, median 0.009 ppm, again measured in 건국동.

Particulate matter displays broader differences. PM₁₀ values range from 26 µg/m³ to 50 µg/m³, with a typical (median) level of 30 µg/m³; the 10th‑percentile sits at 27.2 µg/m³ and the 90th‑percentile at 35.6 µg/m³, showing that most stations cluster around the low‑to‑mid‑30s but some record higher spikes. PM₂.₅ varies between 18 µg/m³ and 34 µg/m³, median 27 µg/m³, with a 10th‑percentile of 19.8 µg/m³ and a 90th‑percentile of 30.6 µg/m³, indicating a similar central tendency but a slightly narrower upper tail than PM₁₀. SO₂ is the least variable, recorded from 0.0021 to 0.0033 ppm, median 0.0028 ppm, with the latest reading at 0.0026 ppm in 건국동.

Overall, the dataset provides a complete set of six pollutants from a modest network of stations, all updated within the same recent timestamp. While CO, NO₂ and O₃ show limited dispersion, particulate matter exhibits a wider spread, suggesting that fine‑particle concentrations can differ more noticeably across locations in Gwangju at any given time.

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 dataset for Gwangju includes 72 valid measurements and is refreshed Updated within 3 days, with the most recent data recorded at 2026‑02‑10T18:00:00+00:00. These values represent a snapshot of ambient conditions across the city’s monitoring network; however, air quality can differ by specific location and time of day, so individual experiences may vary from the reported figures.

OpenAQ station rows