Air quality in Cheongyang-gun, South Korea today

Mr. Duck’s Air Quality Score

Moderate air today for Cheongyang-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 today in Cheongyang‑gun is classified as Moderate. The primary pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 reference value of 30.0 and a PM10 reference value of 35.0, based on twelve valid observations collected via OpenAQ.

These figures reflect the current monitoring results for the area. 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

Cheongyang‑gun’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), particulate matter 2.5 µm or less (PM2.5) and sulfur dioxide (SO₂). The dataset comprises 18 individual rows of observations drawn from two monitoring stations, all of which have a “last updated” timestamp no older than seven days, most recently recorded at 2026‑02‑10 18:00 UTC.

Across the recent measurements CO peaks at 0.54 ppm while the median value sits at 0.49 ppm, indicating a relatively tight spread between the 10th percentile (0.458 ppm) and the 90th percentile (0.53 ppm). NO₂ shows a broader range, from a low of 0.0029 ppm up to 0.016 ppm, with a median of 0.0081 ppm and the central 80 % of values falling between 0.00394 ppm and 0.01442 ppm. O₃ concentrations vary from 0.0078 ppm to 0.0282 ppm; the median (0.0091 ppm) is close to the lower end, while the upper tail reaches 0.02438 ppm at the 90th percentile.

Particulate matter displays higher absolute values: PM10 ranges from 29 µg/m³ to 65 µg/m³, with a median of 35 µg/m³ and most observations (30.2–59 µg/m³) clustered around that centre. PM2.5 spans 22 µg/m³ to 58 µg/m³, median 30 µg/m³, and the inter‑decile spread runs from 23.6 µg/m³ up to 52.4 µg/m³. SO₂ is the most narrowly bounded, staying between 0.0035 ppm and 0.0047 ppm; the median (0.0041 ppm) sits near the upper end of its range.

Overall, the data set offers a fairly recent snapshot from two sites, with all six pollutants represented and most values clustering around their respective medians. The limited number of stations means conditions can differ across the county, so while the figures give a clear picture of current levels at the monitored locations, they may not capture localized variations elsewhere in Cheongyang‑gun.

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 Cheongyang‑gun includes twelve valid measurements and is refreshed regularly, having been updated within three days (last update on 2026‑02‑10 at 18:00 UTC). While these figures provide a current overview of the city’s air quality, conditions can differ across neighborhoods and change throughout the day, so this snapshot may not represent every location or moment.

OpenAQ station rows