CortexLit

CortexLit tool · Sleep · Runs offline · No account

Bedroom Night Comparer

Log three nights of room temperature and your own sleep rating, then see whether they move together in your bedroom.

← Back to the article · See the evidence

This tool gives general information based on the research summarised in Bedroom Temperature and Sleep: What the Studies Actually Measured. It is not a medical device, does not diagnose, and does not replace advice from your clinician.

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Free (this page)
  • three-night log and comparison
  • plain-language reading of the pattern
  • text export and print
  • all citations and cautions


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  • longer logs (up to 20 nights)
  • calendar (.ics) logging reminders
  • unlimited share images
  • share card without the 'Made with CortexLit' footer


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Free tier: 1 share image per result.






Commercial disclosure: optional paid Plus tier; all evidence, cautions and the main result are free. No affiliate links, no sponsors.







What this is based on


Every output names at least one verified PubMed source. Identifiers were verified on 2026-10-11 in an earlier batch and carried over into this build; they were not re-queried here, and no retraction database was checked. Verification was at abstract level.


Basner 2023
Basner M, Smith MG, Jones CW, et al. Associations of bedroom PM2.5, CO2, temperature, humidity, and noise with sleep: An observational actigraphy study. Sleep Health. 2023;9(3):253-263. doi:10.1016/j.sleh.2023.02.010. PMID: 37076419.
PMID 37076419 · observational study · weight 0.5 · abstract level
Chevance 2024
Chevance G, Minor K, Vielma C, et al. A systematic review of ambient heat and sleep in a warming climate. Sleep Med Rev. 2024;75:101915. doi:10.1016/j.smrv.2024.101915. PMID: 38598988.
PMID 38598988 · observational systematic review · weight 0.5 · abstract level


Limits: A three-night self-log is an observation about you, not evidence. Self-rated sleep is affected by expectation, and the bedroom study found people's comfort ratings suggested habituation.







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