Air quality in Gwangmyeong, South Korea today

Mr. Duck’s Air Quality Score

Unhealthy for sensitive groups for Gwangmyeong, 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 Gwangmyeong is classified as USG today. The primary pollutant identified is PM2.5, with a measured concentration of 42.0 µg/m³, while the accompanying PM10 level stands at 68.0 µg/m³ based on twelve valid observations.

Data are shown via OpenAQ and reflect the current monitoring results for the city. 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 Gwangmyeong pulls real‑time readings from a network of twelve monitoring rows supplied by OpenAQ, representing two distinct stations that together cover the city’s air quality picture. All six pollutants tracked—carbon monoxide (CO), nitrogen dioxide (NO2), ozone (O3), particulate matter 10 µm or less (PM10), particulate matter 2.5 µm or less (PM2.5), and sulfur dioxide (SO2)—are reported with a latest timestamp of 2026‑02‑10 18:00 UTC, meaning the information is fresh within the past week for every pollutant.

The measured values show relatively tight spreads. CO ranges from 0.55 to 0.78 ppm with a median of 0.665 ppm; NO2 varies between 0.0305 and 0.0417 ppm, median 0.0361 ppm; O3 is recorded from 0.0033 up to 0.0093 ppm, median 0.0063 ppm. Particulate concentrations are higher but also narrow: PM10 sits between 62 and 68 µg/m³ (median 65 µg/m³) and PM2.5 between 42 and 44 µg/m³ (median 43 µg/m³). SO2 is the lowest of the gases, ranging from 0.0017 to 0.0023 ppm with a median of 0.002 ppm.

Because every pollutant entry comes from the same recent update, there are no older or unknown timestamps in this snapshot, indicating consistent reporting across the two stations. However, the dataset is limited to twelve rows, so while it captures current conditions at specific sites, it may not reflect micro‑scale variations that can occur elsewhere in Gwangmyeong. Users should keep in mind that air quality can differ by neighborhood and time of day even when the overall city data appears up‑to‑date.

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 for Gwangmyeong is based on twelve valid measurements and was updated within three days, with the most recent update recorded at 2026‑02‑10T18:00:00+00:00. This snapshot reflects conditions at the time of collection; air quality can vary by location and time within the city, so values may differ across neighborhoods or later periods.

OpenAQ station rows