Air quality in Bucheon-si, South Korea today

Mr. Duck’s Air Quality Score

Unhealthy for sensitive groups for Bucheon-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 Bucheon‑si is classified as USG. The primary pollutant identified is PM2.5, with a measured concentration of 43.0 µg/m³. In addition, PM10 levels are recorded at 54.0 µg/m³ based on thirty valid observations.

These values reflect the current monitoring data provided through OpenAQ for Bucheon‑si. 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 Bucheon‑si air quality dataset currently includes six common pollutants—carbon monoxide (CO), nitrogen dioxide (NO₂), ozone (O₃), particulate matter 10 µm or smaller (PM₁₀), particulate matter 2.5 µm or smaller (PM₂.₅) and sulfur dioxide (SO₂). Data are drawn from five monitoring stations, providing a total of 36 recent observations across the city. All six pollutants have a most‑recent reading timestamped 2026-02-10 18:00 UTC, which falls within the “updated within 7 days” freshness bucket, indicating that the newest data for each pollutant are less than a week old.

Across the five stations the measured values show a fairly wide spread. CO concentrations range from 0.51 to 0.69 ppm with a median of 0.58 ppm; NO₂ varies between 0.0229 and 0.0542 ppm, centering around 0.037 ppm; O₃ is observed from 0.0018 up to 0.0102 ppm, with a typical value near 0.0056 ppm. Particulate matter shows the greatest absolute variation: PM₁₀ values span 30 µg/m³ to 72 µg/m³ (median 57 µg/m³) and PM₂.₅ ranges from 13 µg/m³ to 75 µg/m³ (median 45 µg/m³). SO₂ is the least variable, recorded between 0.0021 and 0.0036 ppm with a median of 0.00265 ppm.

The dataset therefore offers recent, city‑wide coverage for all six pollutants, but the number of stations (five) limits spatial granularity; conditions can differ between neighborhoods and over time. While most measurements are fresh, the modest station count means that localized spikes or drops may not be captured in every part of Bucheon‑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 Bucheon‑si includes 30 valid measurements and is Updated within 3 days, with the most recent values recorded at 2026‑02‑10T18:00:00+00:00. These figures represent a snapshot of conditions across the monitoring network; air quality can differ by specific location and time of day within the city, so individual experiences may vary from the reported averages.

OpenAQ station rows