AirNow by Skymory

South Korea · Asia/Seoul

Yeongcheon air quality

AQI estimate unavailable

CAMS model-based US AQI estimate

Complete eligible model windows are not available within the stale policy; pollutant concentrations are shown below.

Model values for Oct 31 15:00 KST · CAMS model estimate, may differ from monitoring stations and street-level conditions

Data may be delayed · Page generated 2026-10-31 15:22 KST

AirNow by Skymory is an independent service; it is not affiliated with or endorsed by U.S. EPA or the official AirNow service.

Pollutants now (modeled)

  • PM2.5Fine particles17.4 µg/m³
  • PM10Coarse particles24.3 µg/m³
  • O3Ozone70.5 µg/m³
  • NO2Nitrogen dioxide12.0 µg/m³
  • SO2Sulphur dioxide7.1 µg/m³
  • COCarbon monoxide229.1 µg/m³

Next 24 hours: PM2.5

Modeled PM2.5 forecast (µg/m³)Actual model samples spaced by their valid times. Range 10.7 to 28.8. Forecast, not observations.Oct 31 16:00 KSTNov 01 15:00 KST
Modeled PM2.5 forecast (µg/m³) · 10.7–28.8; actual sample times, no interpolated hourly values.

Pollutant forecast

Hourly model samples in local time; no interpolation.

Local timePM2.5 µg/m³PM10 µg/m³O3 µg/m³NO2 µg/m³SO2 µg/m³CO µg/m³
13.918.667.815.37.3217.7
11.214.257.125.57.8221.6
10.712.733.846.39.2252.7
11.413.012.565.411.3290.4
11.812.96.271.213.1306.6
12.813.55.371.714.2306.7
14.314.82.874.016.7319.0
16.316.81.374.118.8344.1
17.417.71.073.018.3352.0
17.818.00.871.217.9362.2
18.118.40.569.918.1368.9
18.218.40.468.718.3374.9
18.418.60.267.818.7382.6
18.819.00.266.818.7379.5
20.020.20.165.519.6392.7
23.223.40.664.023.4450.9
25.826.11.161.224.4483.6
28.428.81.354.724.2564.1
27.527.91.951.022.3538.2
27.828.32.849.622.1518.8
27.428.04.650.122.2489.2
27.328.04.550.121.5479.7
27.228.04.249.620.6477.7
28.829.73.050.721.6503.0
Data details: about this air quality estimate

Values are modeled by the Copernicus Atmosphere Monitoring Service (CAMS) global forecast, extracted and converted by Skymory for this city. They are model estimates on a coarse grid, not measurements from monitoring stations, and they do not resolve street-level exposure.

  • Model initialization: 2026-10-30T12:00:00+00:00. Values valid: Oct 31 15:00 KST. Retrieved: 2026-10-31T03:38:46.165844+00:00.
  • Page generated from a snapshot with data state STALE_USABLE; model age 18.4 hours at generation.
  • Nearest valid 0.4° model grid cell, about 12 km from the city point.
  • Gases are converted with matching model-level 137 temperature, humidity, surface pressure (lnsp) and hybrid coefficients; particulate matter is read directly from the surface fields.
  • AQI estimate completeness: UNAVAILABLE (COMPLETE means all six pollutants have a complete model window).

The AQI estimate applies EPA breakpoints (May 2026) to explicit trailing model windows (PM 24 h, CO 8 h, NO2 1 h, SO2 and O3 per EPA rules). It is not a station observation, official daily maximum or NowCast, and the official AQI field remains unavailable.

Surface compatibility by pollutant

PollutantSurface compatibility
PM2.5DIRECT_SURFACE
PM10DIRECT_SURFACE
O3DERIVABLE_SURFACE
NO2DERIVABLE_SURFACE
SO2DERIVABLE_SURFACE
CODERIVABLE_SURFACE

Source and license

Contains modified Copernicus Atmosphere Monitoring Service information 2026; city extraction and concentration conversion. CAMS global atmospheric composition forecasts (ECMWF/CAMS). CC BY 4.0.

Provider times stay separate from page generation: collecting data or regenerating this page never resets the source time. Data sources and methodology

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