Air quality in Uiseong-gun, South Korea today

Mr. Duck’s Air Quality Score

Moderate air today for Uiseong-gun, 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 Uiseong‑gun is currently classified as Moderate. The primary pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 concentration of 29.0 µg/m³ and a PM10 level of 37.0 µg/m³, based on 18 valid observations reported through OpenAQ.

These values reflect the present conditions without implying any trend or cause. 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

Uiseong‑gun’s open data feed contains measurements for six common air pollutants – carbon monoxide (CO), nitrogen dioxide (NO₂), ozone (O₃), particulate matter 10 µm or smaller (PM10), fine particulate matter 2.5 µm or smaller (PM2.5) and sulfur dioxide (SO₂). The dataset is built from 18 individual rows collected at three monitoring sites, all of which reported their most recent values on 2026‑02‑10 at 18:00 UTC, well within the seven‑day freshness window that OpenAQ uses for “recent” data.

Across the pollutants the observed concentrations span modest ranges. CO values range from a low of 0.31 ppm to a high of 0.50 ppm with a median of 0.39 ppm; NO₂ varies between 0.0093 ppm and 0.0133 ppm, median 0.010 ppm; O₃ is recorded between 0.0169 ppm and 0.019 ppm, median 0.0188 ppm. Particulate matter shows a broader spread: PM10 measurements run from 25 µg/m³ up to 37 µg/m³ (median 32 µg/m³) while PM2.5 ranges from 25 µg/m³ to 29 µg/m³ with a median of 27 µg/m³. SO₂ is the lowest‑concentration gas, recorded between 0.0024 ppm and 0.004 ppm, median 0.0033 ppm.

The dataset provides complete coverage for each listed pollutant at every site, but the number of rows (18) indicates that observations are limited to a small set of locations within the county. All six pollutants have recent timestamps, so the snapshot reflects conditions on a single day rather than continuous monitoring. Because the data come from only three stations, spatial variation across Uiseong‑gun is not captured in detail; conditions can differ between urban centers, agricultural areas and more remote zones even though the reported values give a useful baseline for the latest measurement period.

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 Uiseong‑gun includes 18 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