Air quality in Hoengseong-eup, South Korea today
Mr. Duck’s Air Quality Score
Unhealthy for sensitive groups for Hoengseong-eup, South Korea
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 Hoengseong‑eup is classified as USG. The primary pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 concentration of 46.0 µg/m³ and a PM10 level of 55.0 µg/m³, based on six valid observations.
Data are shown via OpenAQ. 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 Hoengseong‑eup contains measurements for six common air‑quality gases and particles: 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). Each pollutant is represented by a single observation, so the total coverage consists of six rows – one for each substance – all sourced from the same monitoring location in 횡성읍. The most recent reading for every parameter was recorded on 2026‑02‑10 at 18:00 UTC, which places all data comfortably within the “updated within seven days” freshness bucket.
Because there is only one reporting site, the values shown are both the minimum and maximum observed for each pollutant. CO registers at 0.55 ppm, NO₂ at 0.0253 ppm, O₃ at 0.0072 ppm, SO₂ at 0.003 ppm, PM10 at 55.0 µg/m³ and PM2.5 at 46.0 µg/m³; the median values are identical to these figures. This uniformity means there is no spread or range to describe across time or space within this dataset. The limited station count also implies that conditions can differ in other parts of Hoengseong‑eup, and the single‑point snapshot may not capture local variations that occur later in the day or at different locations.
Overall, the data set offers a complete but very narrow view: all six pollutants are present, each with one recent measurement from a solitary site. While the timestamps are fresh, the lack of multiple rows or historic records means trends and broader spatial patterns cannot be assessed from this source alone.
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 Hoengseong‑eup is based on six valid measurements and was refreshed within the past three days, with the latest update recorded at 2026‑02‑10T18:00:00+00:00. This snapshot reflects conditions at the time of sampling; air quality can differ across neighborhoods and change throughout the day, so values may not represent every location or moment in the city.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| 횡성읍 | co | 0.55 | ppm | 2026-02-10 18:00 UTC |
| 횡성읍 | no2 | 0.0253 | ppm | 2026-02-10 18:00 UTC |
| 횡성읍 | o3 | 0.0072 | ppm | 2026-02-10 18:00 UTC |
| 횡성읍 | pm10 | 55.0 | µg/m³ | 2026-02-10 18:00 UTC |
| 횡성읍 | pm25 | 46.0 | µg/m³ | 2026-02-10 18:00 UTC |
| 횡성읍 | so2 | 0.003 | ppm | 2026-02-10 18:00 UTC |