AirNow by Skymory

South Korea · Asia/Seoul

Chuncheon 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 particles4.7 µg/m³
  • PM10Coarse particles5.8 µg/m³
  • O3Ozone81.4 µg/m³
  • NO2Nitrogen dioxide3.0 µg/m³
  • SO2Sulphur dioxide2.5 µg/m³
  • COCarbon monoxide172.9 µg/m³

Next 24 hours: PM2.5

Modeled PM2.5 forecast (µg/m³)Actual model samples spaced by their valid times. Range 5.0 to 28.7. Forecast, not observations.Oct 31 16:00 KSTNov 01 15:00 KST
Modeled PM2.5 forecast (µg/m³) · 5.0–28.7; 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
5.06.077.93.92.7175.1
5.66.470.07.53.0182.6
6.87.549.421.23.5209.8
8.99.725.641.44.6251.5
10.611.410.653.95.8285.5
12.112.92.859.56.9313.3
13.314.30.460.37.9335.5
14.015.10.259.78.5349.2
14.415.50.259.98.6352.0
14.515.60.158.78.3353.2
14.515.60.357.27.9348.5
14.415.40.655.87.5339.8
14.515.61.354.77.4333.2
14.715.74.751.87.2320.5
15.116.23.951.77.3322.2
16.117.22.252.67.9341.4
17.718.94.650.48.9372.0
18.419.924.136.28.7291.2
19.121.432.729.89.3257.4
20.424.139.326.59.5235.7
25.432.544.624.79.6221.0
28.738.048.923.99.8213.4
28.738.353.423.510.1208.4
26.333.651.226.59.9210.2
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: 2026-10-31T03:37:51.256996+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 17 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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