40
Good · Dominant pollutant: Ozone (O₃)
Air quality is satisfactory; air pollution poses little or no risk.
The current Air Quality Index (AQI) in Seoul is 40, categorized as Good. Air quality is satisfactory; air pollution poses little or no risk.
Pollutants & conditions
| Measurement | Value |
|---|
| PM2.5 | 13 |
| PM10 | 7 |
| Ozone (O₃) | 40 |
| Nitrogen Dioxide (NO₂) | 8.5 |
| Sulfur Dioxide (SO₂) | 3.6 |
| Carbon Monoxide (CO) | 3.7 |
| Temperature (°C) | 18.1 |
| Humidity (%) | 64.9 |
| Pressure (hPa) | 1000.8 |
| Wind (m/s) | 3 |
PM2.5 forecast
| Date | Avg | Min | Max |
|---|
| 2026-05-20 | 89 | 87 | 89 |
| 2026-05-21 | 69 | 68 | 84 |
| 2026-05-22 | 75 | 68 | 89 |
| 2026-05-23 | 81 | 68 | 89 |
| 2026-05-24 | 128 | 89 | 138 |
Nearby cities
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