South Korea · Asia/Seoul
Seosan 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 particles5.0 µg/m³
- PM10Coarse particles6.2 µg/m³
- O3Ozone84.9 µg/m³
- NO2Nitrogen dioxide4.7 µg/m³
- SO2Sulphur dioxide3.6 µg/m³
- COCarbon monoxide173.3 µg/m³
Weather in Seosan
See the temperature, rain and wind forecast for Seosan.
Seosan weather forecast on SkymoryNext 24 hours: PM2.5
Pollutant forecast
Hourly model samples in local time; no interpolation.
| Local time | PM2.5 µg/m³ | PM10 µg/m³ | O3 µg/m³ | NO2 µg/m³ | SO2 µg/m³ | CO µg/m³ |
|---|---|---|---|---|---|---|
| 5.6 | 6.9 | 82.8 | 5.6 | 3.8 | 176.0 | |
| 6.3 | 7.8 | 78.2 | 8.0 | 4.1 | 179.4 | |
| 7.2 | 8.7 | 65.7 | 16.3 | 4.5 | 193.4 | |
| 8.2 | 9.8 | 55.2 | 24.4 | 5.0 | 209.9 | |
| 9.0 | 10.7 | 51.4 | 27.3 | 5.8 | 222.9 | |
| 9.9 | 11.6 | 50.3 | 27.7 | 6.9 | 234.7 | |
| 10.7 | 12.4 | 49.5 | 28.2 | 8.1 | 247.4 | |
| 11.5 | 13.2 | 48.3 | 28.7 | 9.1 | 259.8 | |
| 12.1 | 13.7 | 44.9 | 29.9 | 10.2 | 274.6 | |
| 11.9 | 13.3 | 41.4 | 30.2 | 10.2 | 280.4 | |
| 11.4 | 12.6 | 38.8 | 30.2 | 10.2 | 277.8 | |
| 10.7 | 11.9 | 37.5 | 29.6 | 10.2 | 268.4 | |
| 10.4 | 11.8 | 38.0 | 27.4 | 9.4 | 263.9 | |
| 10.9 | 12.7 | 39.0 | 25.0 | 8.4 | 263.7 | |
| 11.1 | 13.0 | 37.7 | 25.4 | 8.8 | 266.4 | |
| 11.9 | 13.7 | 31.5 | 32.1 | 11.0 | 279.5 | |
| 13.8 | 15.2 | 22.7 | 43.1 | 14.5 | 294.2 | |
| 14.6 | 15.9 | 21.7 | 45.8 | 16.6 | 287.4 | |
| 14.7 | 16.0 | 23.8 | 45.1 | 16.6 | 268.2 | |
| 14.8 | 16.3 | 26.1 | 44.0 | 16.0 | 260.4 | |
| 15.1 | 17.0 | 25.6 | 44.5 | 14.9 | 264.3 | |
| 14.3 | 17.3 | 32.2 | 42.4 | 14.1 | 250.1 | |
| 14.9 | 17.9 | 29.8 | 42.9 | 12.8 | 263.6 | |
| 14.5 | 17.3 | 29.0 | 46.0 | 11.8 | 264.5 |
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: 2026-10-31T03:36:09.097408+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 5 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
| Pollutant | Surface compatibility |
|---|---|
| PM2.5 | DIRECT_SURFACE |
| PM10 | DIRECT_SURFACE |
| O3 | DERIVABLE_SURFACE |
| NO2 | DERIVABLE_SURFACE |
| SO2 | DERIVABLE_SURFACE |
| CO | DERIVABLE_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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