Air quality in Donghae-si, South Korea today

Mr. Duck’s Air Quality Score

Moderate air today for Donghae-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 Donghae‑si is currently classified as Moderate. The primary pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 concentration of 11.0 µg/m³ and a PM10 level of 16.0 µg/m³, based on 18 valid observations collected via OpenAQ.

These values reflect the present monitoring results for the city. 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

Donghae‑si’s open‑air quality feed currently includes six measured pollutants – 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 18 individual rows of observations collected at three monitoring stations across the city, giving a modest spatial snapshot of conditions.

All of the latest readings were recorded on 2026‑02‑10 at 18:00 UTC, so the data are fresh within the past seven days. For CO the values range from 0.29 ppm to 0.34 ppm with a median of 0.32 ppm; NO₂ spans 0.0048 ppm to 0.0137 ppm (median 0.0107 ppm); O₃ varies between 0.0282 ppm and 0.0481 ppm (median 0.0432 ppm). Particulate matter shows a broader spread: PM10 is observed from 16 µg/m³ up to 34 µg/m³, with the middle value at 31 µg/m³, while PM2.5 ranges from 11 µg/m³ to 17 µg/m³ and centers around 16 µg/m³. SO₂ is the most tightly clustered, recorded between 0.0022 ppm and 0.0023 ppm with a median of 0.0022 ppm.

The coverage across pollutants is fairly even in terms of recent updates – every pollutant has at least one observation from each of the three stations on the same timestamp. However, the number of rows (18) indicates that many measurements are single‑point snapshots rather than continuous streams, so conditions can differ by neighborhood and time of day. Users should keep in mind that while the current figures give a clear picture of recent air quality at the sampled locations, they do not capture the full temporal or spatial variability that may exist throughout Donghae‑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 data shown for Donghae‑si is based on 18 valid measurements and was refreshed recently, Updated within 3 days (last update: 2026-02-10T18:00:00+00:00). This snapshot reflects conditions at the time of collection; air quality can vary by location and time within the city, so values may differ across neighborhoods or later in the day.

OpenAQ station rows