Air quality in Guri-si, South Korea today

Mr. Duck’s Air Quality Score

Unhealthy for sensitive groups for Guri-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 Guri‑si is classified as USG. The primary pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 reference value of 52.0 and a PM10 reference value of 69.0, based on twelve valid observations recorded through OpenAQ.

These figures 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 Guri‑si dataset currently contains observations from three monitoring stations, each providing a full set of six common air‑quality 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). All the latest readings were recorded on 2026‑02‑10 at 18:00 UTC, so the most recent data are no older than seven days for every pollutant.

Across the three stations the measured values show a fairly wide spread. CO peaks at 0.65 ppm while the lowest reading is 0.25 ppm; the median value of 0.65 ppm comes from the 교문동 site. NO2 ranges from 0.0181 to 0.0433 ppm with a median of 0.037 ppm, again recorded at 교문동. Ozone varies between 0.0011 and 0.0088 ppm, the middle value being 0.0053 ppm at the same location. For particulate matter, PM10 values sit between 25 µg/m³ and 73 µg/m³ with a median of 69 µg/m³, while PM2.5 spans 14 to 57 µg/m³ and has a median of 52 µg/m³; both medians are reported from 교문동. SO2 is the least variable, ranging from 0.0017 to 0.0034 ppm with a median of 0.0026 ppm at 교문동.

The data set includes no rows classified as “old” or “unknown”; only six entries are marked as outdated beyond seven days, meaning most of the information reflects current conditions. However, because the coverage is limited to three stations, spatial variation within Guri‑si may not be fully captured, and conditions can differ in areas without a nearby monitor.

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 twelve valid measurements and is updated within three days, with the most recent reading recorded at 2026‑02‑10T18:00:00+00:00. While this provides a current snapshot of air quality for Guri‑si, conditions can differ across neighborhoods and change throughout the day, so local variations may not be captured in these aggregate figures.

OpenAQ station rows