Air quality in Pyeongtaek-si, South Korea today

Mr. Duck’s Air Quality Score

Moderate air today for Pyeongtaek-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 Pyeongtaek‑si is currently classified as Moderate. The main pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 concentration of 32.0 µg/m³ and a PM10 level of 46.0 µg/m³, based on thirty valid observations collected 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

The air‑quality feed for Pyeongtaek‑si draws from five monitoring stations and provides recent measurements for six key 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). All of the latest readings were recorded at the same moment – 2026‑02‑10 17:00 UTC – so the dataset is uniformly fresh across the board.

Across the five stations, CO values range from a low of 0.28 ppm to a high of 0.49 ppm, with a median of 0.33 ppm and the 90th percentile sitting at about 0.44 ppm. NO₂ shows a broader spread: minimum 0.0111 ppm, maximum 0.0327 ppm, median 0.0175 ppm and the upper decile near 0.028 ppm. Ozone is measured between 0.0091 ppm and 0.0263 ppm, with a typical value of 0.023 ppm; its 10th percentile is roughly 0.0136 ppm. For particulate matter, PM10 values sit between 36 µg/m³ and 46 µg/m³, median 41 µg/m³ and the 90th percentile about 44.4 µg/m³, while PM2.5 ranges from 26 µg/m³ to 32 µg/m³, median 28 µg/m³ and upper decile near 31.2 µg/m³. Sulfur dioxide is the least variable, recorded from 0.0021 ppm up to 0.003 ppm, with a median of 0.0023 ppm and a 90th percentile close to 0.00292 ppm.

Because every pollutant’s most recent observation comes from the same timestamp, there are no gaps or outdated entries in this snapshot; however, the data reflects only five stations, so spatial variation within the city may not be fully captured. The reported ranges illustrate that while some gases such as CO and SO₂ stay tightly clustered, others like NO₂ exhibit a wider dispersion across monitoring points.

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 Pyeongtaek‑si is based on 30 valid measurements and was refreshed within the past three days, with the latest update recorded at 2026‑02‑10T17:00:00+00:00. This snapshot reflects conditions measured at specific monitoring sites and times; air quality can differ across neighborhoods and throughout the day, so values may not represent every location or moment in the city.

OpenAQ station rows