Outdoor exercise
Is it safe to run in Seoul today?
Live AQI and the best running window for Seoul based on Open-Meteo hourly forecasts.
Running today
Yes — generally safe for outdoor running
Current conditions are good for outdoor running, including longer or higher-intensity sessions. Sensitive groups — young children, older adults, and people with asthma or heart conditions — can generally exercise outdoors as normal, but it is still worth checking the hourly forecast below in case conditions shift later in the day.
Current AQI in Seoul
75
Fair
Updated 19 Jul 2026, 04:00
Best window to run (next 12h)
19:00 – 20:00 · lowest ~52 AQI
Hourly AQI (next 12 hours)
Now
70
10:00
71
11:00
73
12:00
74
13:00
75
14:00
76
15:00
76
16:00
74
17:00
64
18:00
56
19:00
53
20:00
52
What affects air quality for runners in Seoul
Seoul experiences strong daily variation due to dense traffic, urban canyons, and regional background pollution. Roadside nitrogen dioxide peaks often align with commute intensity, while PM2.5 can remain elevated across broader areas. City topography and building density influence how quickly pollutants disperse after emission peaks.