Tonight in Hackney
You might struggle to drop off
Warm and sticky.
Sleep Score
4
⁄10
Warm
Overnight low
21°C
Warm and oppressive
Stickiness
17°C
Muggy
Cooling by 4am
3.7°C
Moderate cooling
Tonight's plan
Warm and muggy tonight — expect disrupted sleep without intervention.
Windows
Closed
Warmer outside than a good bedroom — opening them makes it worse, not better
Heating
Off
Warm enough — heating would make it harder to sleep, not easier
Bedding
Light duvet or top sheet
Enough to feel covered, light enough to not trap heat
Fan
Recommended
Aim across your body, not directly at your face — drops perceived temp by 2–3°C
Based on temperature, dew point, wind, and overnight cooling
Why this matters
21°C is above the ideal 16–18°C range, but not dramatically. Most people will still fall asleep — it's staying asleep through the early hours that becomes harder, because your body can't complete its natural cooling cycle.
Dew point is 17°C — not extreme but enough to make the warmth feel stickier than the temperature alone suggests. The gap between temperature and dew point is what determines whether the air feels fresh or muggy.
The week ahead
Fri will be the best night, tonight the worst.
Hackney · next 7 nights
Next great sleep night: Fri.