Air quality in Namyangju-si, South Korea today

Mr. Duck’s Air Quality Score

Unhealthy air today for Namyangju-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 Namyangju‑si is currently classified as Unhealthy. The primary pollutant identified is PM2.5, with a measured concentration of 63.0 µg/m³, while PM10 stands at 82.0 µg/m³ based on 42 valid observations.

These values reflect the latest data shown via OpenAQ for Namyangju‑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 Namyangju‑si dataset pulls in measurements from eight monitoring sites, giving a total of fifty‑four recent observations across the city. For most of the key gases and particles—CO, NO₂, O₃, SO₂, PM10, PM2.5 and PM1—the newest values were recorded on 2026‑02‑10 at 18:00 UTC, so the core air‑quality picture reflects conditions from just a few days ago. Relative humidity is also reported, but its timestamp is not available, and the single PM1 reading lacks a station name or update time, indicating that coverage for the smallest particulate fraction is very limited.

Across the eight stations, PM10 values range from about 24 µg/m³ up to 82 µg/m³, with a median of 57 µg/m³ and the 90th percentile near 75 µg/m³. PM2.5 shows a similar spread, moving between 15 µg/m³ and 63 µg/m³, a median of 46 µg/m³ and a 90th‑percentile around 57 µg/m³. Carbon monoxide varies from 0.18 ppm to 0.80 ppm, centering on a median of 0.69 ppm; the upper ten percent sit at the maximum reported level of 0.80 ppm. Nitrogen dioxide is recorded between 0.0105 ppm and 0.0383 ppm, with a typical value near 0.034 ppm, while ozone spans a broader interval from 0.0003 ppm up to 0.0226 ppm, medianing at 0.0014 ppm. Sulfur dioxide is the most tightly clustered, ranging only from 0.0013 ppm to 0.0033 ppm and clustering around a median of 0.00255 ppm.

Because the dataset includes eight stations but only one row for PM1 and no timestamped humidity data, the picture of ultra‑fine particles and moisture is incomplete. Most pollutants have fresh readings within the last week, yet the uneven reporting means that conditions can differ across neighborhoods and times not captured here. Users should keep in mind that the available numbers represent a snapshot from early February and may not reflect rapid changes that occur later in the day or at locations without a monitoring site.

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 Namyangju‑si includes 42 valid measurements and is updated within 3 days, with the most recent values recorded at 2026‑02‑10T18:00:00+00:00. This snapshot reflects conditions measured at specific monitoring sites and times; air quality can differ across neighborhoods and throughout the day, so the figures may not represent every location or moment in the city.

OpenAQ station rows