Air quality in Gimpo-si, South Korea today

Mr. Duck’s Air Quality Score

Unhealthy air today for Gimpo-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

Today the air quality in Gimpo‑si is classified as Unhealthy. The primary pollutant identified is PM2.5. The latest data indicate a PM2.5 concentration of 56.0 µg/m³ and a PM10 concentration of 64.0 µg/m³. These measurements are based on 28 valid observations collected through the OpenAQ network. Both fine particle (PM2.5) and coarse particle (PM10) values are reported as reference concentrations for the monitoring period.

Data is shown via OpenAQ. The figures represent the most recent sampling interval and are presented without adjustment. The dataset includes only measurements that met quality criteria. All concentrations are expressed in micrograms per cubic meter. 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 Gimpo‑si pulls information from five monitoring sites, giving a total of thirty‑six recent observations. Freshness indicators show that thirty of the rows have been updated within the past thirty days, while six rows are older than a month; the newest timestamp across all pollutants is 2026‑02‑10 18:00 UTC. This mix of recent and slightly dated entries means the snapshot reflects current conditions in many places but also includes some measurements that may no longer represent the present air quality.

All six common pollutants are represented: carbon monoxide (CO), nitrogen dioxide (NO₂), ozone (O₃), particulate matter ≤ 10 µm (PM10), particulate matter ≤ 2.5 µm (PM2.5), and sulfur dioxide (SO₂). The latest reported values, all recorded at the 사우동 station on 2026‑02‑10 18:00 UTC, are 0.94 ppm for CO, 0.0449 ppm for NO₂, 0.0017 ppm for O₃, 64.0 µg/m³ for PM10, 56.0 µg/m³ for PM2.5, and 0.0055 ppm for SO₂. Median concentrations across the recent rows sit at 0.785 ppm for CO, 0.0357 ppm for NO₂, 0.00155 ppm for O₃, 69.5 µg/m³ for PM10, 60 µg/m³ for PM2.5, and 0.00365 ppm for SO₂, showing typical levels that are generally close to the most recent readings.

The range of values varies markedly between pollutants. For CO and SO₂ the maximum recorded values reach the placeholder 9 999, suggesting occasional sensor spikes or data‑entry limits, whereas the upper ends for NO₂ (0.0449 ppm), O₃ (0.0086 ppm), PM10 (95 µg/m³) and PM2.5 (77 µg/m³) stay within expected urban ranges. The ten‑percentile figures—0.515 ppm for CO, 0.0217 ppm for NO₂, 0.00065 ppm for O₃, 40.5 µg/m³ for PM10, 33.5 µg/m³ for PM2.5, and 0.00305 ppm for SO₂—indicate that lower‑end measurements are considerably below the medians, highlighting spatial or temporal variability across the city. Because some rows are older than a month, conditions can differ by location and time, and the dataset should be interpreted as a composite view rather than a single point in 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 data for Gimpo‑si reflects 28 valid measurements and is Updated within 30 days. The latest values were recorded on 2026‑02‑10T18:00:00+00:00. This snapshot represents conditions at specific monitoring sites and times; air quality can vary across different neighborhoods and moments within the city.

OpenAQ station rows