Air quality now
Air quality in Seoul
South Korea
Above WHO limits — NO₂ is 1.3× the WHO limit
🚬 Breathing this all day ≈ smoking 0.5 cigarettes
Each ball below is a pollutant measured in Seoul, sized against WHO safe limits — it's a snapshot of the air, not a map.
- PM2.511 µg/m³0.7×
- PM1012 µg/m³0.3×
- NO₂33 µg/m³1.3×
- O₃53 µg/m³0.5×
- SO₂23 µg/m³0.6×
- CO347 µg/m³0.1×
What you're seeing
Each ball is a pollutant measured in Seoulright now. The more balls of a colour, the more of that pollutant is in the air — normalised against the World Health Organization's safe limits, so a hazy city looks unmistakably denser than a clean one. Data is live from Open-Meteo / CAMS. How Polly works →
Want your own city and a hay-fever pollen view? Open the live map, or track your symptoms against the air.