South Korea · Asia/Seoul
Seongnam 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 particles6.4 µg/m³
- PM10Coarse particles7.0 µg/m³
- O3Ozone70.6 µg/m³
- NO2Nitrogen dioxide12.2 µg/m³
- SO2Sulphur dioxide8.5 µg/m³
- COCarbon monoxide196.4 µg/m³
Weather in Seongnam
See the temperature, rain and wind forecast for Seongnam.
Seongnam 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 |
|---|---|---|---|---|---|---|
| 7.4 | 8.1 | 64.8 | 15.2 | 9.2 | 203.6 | |
| 9.4 | 10.1 | 47.7 | 28.0 | 11.0 | 228.2 | |
| 16.3 | 17.0 | 5.1 | 64.9 | 18.1 | 326.4 | |
| 24.1 | 24.9 | 0.0 | 69.0 | 28.8 | 428.6 | |
| 31.1 | 32.3 | 0.0 | 67.7 | 41.0 | 516.9 | |
| 37.9 | 39.2 | 0.0 | 66.5 | 53.2 | 591.5 | |
| 45.4 | 46.7 | 0.0 | 65.1 | 66.3 | 674.2 | |
| 50.4 | 51.7 | 0.0 | 63.6 | 72.9 | 734.0 | |
| 52.8 | 54.1 | 0.0 | 61.9 | 68.1 | 761.6 | |
| 51.7 | 52.7 | 0.0 | 59.1 | 58.8 | 757.1 | |
| 51.0 | 52.0 | 0.0 | 56.2 | 53.0 | 759.6 | |
| 48.1 | 48.9 | 0.0 | 53.5 | 45.3 | 746.5 | |
| 47.2 | 47.8 | 0.0 | 51.0 | 41.0 | 751.6 | |
| 44.6 | 45.3 | 0.0 | 49.1 | 37.8 | 741.4 | |
| 41.6 | 42.3 | 0.0 | 49.7 | 36.9 | 715.5 | |
| 41.6 | 42.4 | 0.1 | 53.0 | 42.8 | 716.5 | |
| 44.2 | 45.4 | 0.7 | 53.2 | 47.1 | 771.1 | |
| 43.7 | 45.8 | 1.7 | 53.0 | 47.1 | 724.0 | |
| 40.0 | 42.6 | 4.1 | 53.5 | 43.7 | 562.3 | |
| 36.3 | 39.8 | 8.1 | 53.7 | 38.9 | 427.6 | |
| 35.3 | 39.2 | 11.2 | 52.8 | 36.6 | 386.2 | |
| 33.7 | 37.8 | 13.6 | 53.0 | 33.8 | 356.2 | |
| 30.3 | 33.5 | 14.5 | 54.7 | 30.9 | 334.9 | |
| 29.5 | 31.8 | 8.8 | 59.5 | 30.1 | 342.3 |
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 19 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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