Air quality in Goyang-si, South Korea today

Mr. Duck’s Air Quality Score

Unhealthy air today for Goyang-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 in Goyang‑si is currently classified as Unhealthy. The primary pollutant identified is PM2.5, with a measured concentration of 59.0 µg/m³, while the accompanying PM10 level stands at 74.0 µg/m³ based on thirty valid observations.

These values are presented through OpenAQ data and reflect the conditions at the time of measurement. 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

Goyang‑si’s open data feed includes six common air‑quality measurements – 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 dataset is built from 42 recent observations collected at five monitoring sites across the city, so each pollutant is represented by multiple rows rather than a single point source.

All six pollutants have fresh readings that were last updated on 2026‑02‑10 at 17:00 UTC, which means the newest data are no older than seven days. The typical values show a modest spread: CO ranges from 0.3 to 0.8 ppm with a median of 0.7 ppm; NO₂ varies between 0.005 and 0.041 ppm, centering around 0.028 ppm; O₃ is measured from 0.0019 up to 0.0329 ppm, with a median near 0.004 ppm. Particulate matter shows the broadest range – PM10 values sit between 26 and 74 µg/m³ (median 63 µg/m³) while PM2.5 spans 13 to 59 µg/m³ (median 49 µg/m³). SO₂ is the most tightly clustered, recorded from 0.0022 to 0.0036 ppm with a median of 0.003 ppm.

Because the data come from only five stations, spatial coverage is limited; conditions can differ between neighborhoods and the city‑wide picture may not capture localized spikes or drops. Nevertheless, the dataset provides a recent snapshot for each pollutant, with most observations falling within the middle 80 percent of their respective ranges (10th to 90th percentiles), giving residents a useful baseline of current air quality across Goyang‑si.

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 Goyang‑si includes 30 valid measurements and is Updated within 3 days, with the most recent data recorded at 2026-02-10T17:00:00+00:00. While this information reflects the overall air quality conditions across the city, actual levels can differ by specific neighborhoods and times of day, so users should consider local variations when interpreting the figures.

OpenAQ station rows