Air quality in Anyang-si, South Korea today

Mr. Duck’s Air Quality Score

Unhealthy for sensitive groups for Anyang-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 today in Anyang‑si is classified as USG. The primary pollutant identified is PM2.5, with a measured concentration of 41.0 µg/m³. In addition, the PM10 level is recorded at 55.0 µg/m³ based on 24 valid observations.

Data are shown via OpenAQ and reflect the current 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

The dataset for Anyang‑si includes six common air‑quality 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). Measurements come from four monitoring stations, giving a total of 36 recent rows across the pollutants. All values were recorded at the same moment, 2026‑02‑10 18:00 UTC, which falls within the “updated within 7 days” freshness bucket, so the data represent a very current snapshot for the city.

Across the six pollutants the observed concentrations span modest ranges. CO varies from 0.37 ppm to 0.83 ppm with a median of 0.52 ppm; NO₂ runs between 0.0094 ppm and 0.0401 ppm, median 0.0255 ppm; O₃ is measured from 0.0005 ppm up to 0.0325 ppm, median 0.0107 ppm. For the particulates, PM10 values lie between 19 µg/m³ and 55 µg/m³ (median 39 µg/m³) while PM2.5 ranges from 14 µg/m³ to 41 µg/m³ with a median of 25.5 µg/m³. SO₂ is the lowest‑level gas, recorded between 0.0017 ppm and 0.0029 ppm, median 0.0025 ppm.

The data show fairly even coverage across all pollutants – each has six recent rows from the four stations – but the spread differs: gases such as CO and NO₂ have a broader percentile range (10th to 90th percentiles of 0.40–0.71 ppm for CO and 0.013‑0.039 ppm for NO₂) compared with SO₂, whose 10th‑90th range is only 0.002‑0.00285 ppm. Particulate matter displays the widest absolute variation, especially PM10 where the 10th percentile is 22.5 µg/m³ and the 90th reaches 52 µg/m³. Because the snapshot reflects a single time point, conditions can differ across neighborhoods and over the day, so these numbers give a concise but limited view of Anyang‑si’s air quality at that moment.

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 reflects 24 valid measurements and is Updated within 3 days, with the most recent reading recorded at 2026‑02‑10T18:00:00+00:00. While this provides a reliable snapshot of overall conditions in Anyang‑si, air quality can vary by location and time within the city, so individual experiences may differ from the summary presented here.

OpenAQ station rows