Outdoor exercise
Is it safe to run in London today?
Live AQI and the best running window for London 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 London
14
Excellent
Updated 4 Sept 2026, 09:00
Best window to run (next 12h)
11:00 – 12:00 · lowest ~10 AQI
Hourly AQI (next 12 hours)
Now
12
10:00
12
11:00
11
12:00
10
13:00
13
14:00
13
15:00
14
16:00
14
17:00
17
18:00
18
19:00
20
20:00
21
What affects air quality for runners in London
London air quality changes quickly between boroughs because the city combines dense traffic routes, mixed housing, and major green corridors. Nitrogen dioxide is often highest near main roads, while finer particles spread more widely during still weather. Wind along the Thames can improve one district while leaving others under persistent urban haze.