Air quality in Dangjin-si, South Korea today

Mr. Duck’s Air Quality Score

Moderate air today for Dangjin-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 Dangjin‑si is rated as Moderate. The primary pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 reference value of 27.0 µg/m³ and a PM10 reference value of 35.0 µg/m³, based on 24 valid observations collected through OpenAQ.

These figures reflect the current assessment without implying any health implications or recommended actions. 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

Dangjin‑si’s open‑air quality feed currently includes six measured pollutants – 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 dataset comprises 42 individual rows drawn from four monitoring stations, each reporting the same set of pollutants. All values in the file were last refreshed on 2026‑02‑10 at 18:00 UTC, which falls within the “updated within 7 days” freshness bucket for every pollutant, so the information is relatively current.

Across the city the observed concentrations show a modest spread. CO ranges from 0.36 to 0.65 ppm with a median of 0.43 ppm; NO₂ varies between 0.0018 and 0.0423 ppm (median 0.0096 ppm); O₃ is recorded from 0.0054 up to 0.0457 ppm (median 0.033 ppm). For the particulates, PM₁₀ values sit between 23 µg/m³ and 78 µg/m³ with a median of 31 µg/m³, while PM₂.₅ spans 17 µg/m³ to 37 µg/m³ (median 26 µg/m³). SO₂ is the least variable, ranging from 0.0029 to 0.0042 ppm and centering on a median of 0.0037 ppm.

The data illustrate that most pollutants have a fairly tight central tendency – the 10th‑percentile values are close to the minima and the 90th‑percentile values approach the maxima, indicating limited extreme excursions in this snapshot. However, coverage is uneven: while every station reports all six gases and particles, the number of rows (42) means each station contributes only a handful of recent observations, so city‑wide conditions may still differ by neighborhood or time of day. Users should keep in mind that these figures represent the latest available readings from the sensor network and reflect conditions at the specific sampling points rather than a continuous city‑scale average.

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 Dangjin‑si includes 24 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 ambient conditions across the city; actual air quality can differ by specific location and time of day, so users should consider local variations when interpreting the data.

OpenAQ station rows