AirNow by Skymory

South Korea · Asia/Seoul

Gwangyang 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 particles20.3 µg/m³
  • PM10Coarse particles32.1 µg/m³
  • O3Ozone78.6 µg/m³
  • NO2Nitrogen dioxide7.8 µg/m³
  • SO2Sulphur dioxide4.6 µg/m³
  • COCarbon monoxide236.0 µg/m³

Next 24 hours: PM2.5

Modeled PM2.5 forecast (µg/m³)Actual model samples spaced by their valid times. Range 8.1 to 17.5. Forecast, not observations.Oct 31 16:00 KSTNov 01 15:00 KST
Modeled PM2.5 forecast (µg/m³) · 8.1–17.5; 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
17.526.977.19.24.6218.1
15.223.271.113.64.7211.0
14.020.757.224.15.4222.3
14.020.037.738.86.3249.5
14.219.926.546.97.2274.6
14.419.521.848.97.9299.3
14.518.920.348.38.4325.0
14.117.815.651.58.2344.7
13.516.814.652.07.9346.0
13.015.912.752.07.2348.7
12.515.011.151.76.7345.7
12.314.49.051.96.2344.6
12.013.86.353.76.0338.4
11.813.25.356.56.1320.9
11.412.56.858.36.4305.4
10.611.611.158.37.7305.2
11.112.116.053.89.0335.2
11.112.423.344.59.9346.5
9.511.127.544.911.0299.6
8.19.939.739.911.9252.6
8.310.442.338.513.4243.4
8.811.141.438.814.0240.6
9.311.840.439.214.2239.5
10.112.836.740.814.1245.6
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: 2026-10-31T03:34:22.424119+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 18 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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