Today's Weather Forecast - London

Today's weather in London. high 20°C (68°F), low 14°C (57°F). Overcast.

Today’s Hourly Weather Outlook

Morning6 AM – Noon16°
Wind speed
14 km/h
Rain probability
0%
AfternoonNoon – 6 PM20°
Wind speed
16 km/h
Rain probability
2%
Evening6 PM – Midn18°
Wind speed
18 km/h
Rain probability
54%
NightMidn – 6 AM16°
Wind speed
7 km/h
Rain probability
0%

24-Hour Rain & Temperature Forecast

Sunrise & Sunset

Sunrise
Dawn 5:57 AM
Total Daylight
Day completeSolar noon 12:56 PM
Sunset
Dusk 7:56 PM
RemainingDaylight ended
Solar elevation-28°
vs yesterday-6 min

Air Quality Index & Health Advice

Air Quality Index

Air quality level
Good
Dominant pollutant
Dominant: PM2.5
Monitoring station
London
PM2.5
25μg/m³
PM10
14μg/m³
O₃
19.1ppb
NO₂
18.3ppb
SO₂
1.1ppb
CO
2.8ppm
0Good → Hazardous300+

5-Day Weather Forecast

Full 15-Day Forecast

Weather Insight

London is forecast to reach a high of 20°C today, with an overnight low around 14°C. Expect a fair chance of rain (54% probability) and a gentle breeze averaging 18 km/h. Air quality is currently good (AQI 32), with no notable outdoor health concerns.

Today vs Normal

20°C0° below normal

The long-term average high for today is 20°C.

17 of the last 20 days with published data ran above normal.

That's a break from the pattern - today's forecast runs below normal even though the recent stretch mostly ran above.

2026-08-19: 24°C24°2026-08-20: 23°C23°2026-08-21: 22°C22°2026-08-22: 22°C22°2026-08-23: 24°C24°2026-08-24: 22°C22°2026-08-25: 25°C25°2026-08-26: 27°C27°2026-08-27: 25°C25°2026-08-28: 24°C24°2026-08-29: 19°C19°2026-08-30: 22°C22°

Red = above normal, blue = at or below · last 12 days

Air Quality

Air Quality
Good

Air quality is considered satisfactory, and air pollution poses little or no risk. It’s a good day to be active outside.