Sleep by City
How Sleep Varies by Where You Live
Real, sourced data on daylight swing, light pollution, and local sleep survey findings for major cities worldwide — not generic sleep advice with a city name swapped in. Every number here is either computed directly from the city's real coordinates or cited to a named source.
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From coast-to-coast time zones to 24-hour cities, sleep environment varies enormously across the US.
New York City
In Times Square, researchers studying artificial sky brightness found that at midnight you'd struggle to count…
Los Angeles
Los Angeles shows up on two separate real lists that turn out to be connected: cities with the worst fine-part…
Chicago
A 2024 study measuring real ambient decibel levels across major US cities ranked Chicago among the top 5 loude…
San Francisco
San Francisco presents a genuine data contradiction: one analysis ranks it among the top US cities for sleep, …
Miami
A 2024 study measuring real ambient decibel levels across major US cities found Miami had the highest average …
Las Vegas
Of the 30 most populous US cities, Las Vegas searched Google about sleep problems more than any other — and se…
Denver
Denver is the one city on this hub where altitude itself — not noise, light, or work culture — is the best-doc…
Seattle
"People really are sleepless in Seattle," a 2022 analysis of Google search data concluded, after finding the c…
Boston
Boston rounded out the top 5 of a 2022 analysis of the 30 most populous US cities' Google search volume for sl…
Atlanta
Atlanta's traffic reputation is backed by real, repeatedly measured data: a 2026 analysis of the 50 largest US…
Phoenix
A 2025 peer-reviewed study in Phoenix found that extreme heat has a greater impact on people's sleeping-locati…
Washington DC
Washington DC has the longest average one-way commute of any major US city measured in 2026 traffic studies — …
Baltimore
Baltimore ranked 2nd among the 30 most populous US cities for Google search volume about sleep problems in a 2…
Philadelphia
Philadelphia has something no other city on this hub can genuinely claim: an actual, dedicated academic sleep …
Houston
A 2024 survey of over 5,000 Houston and Harris County residents, conducted by Rice University's Kinder Institu…
Minneapolis
University of Minnesota neurology and psychology faculty consistently cite a real, specific figure for the Twi…
Honolulu
Despite Hawaii's laid-back reputation, Honolulu County has the state's highest rate of insufficient sleep amon…
New Orleans
New Orleans drew nearly 19.5 million visitors in 2025 — a real, record-approaching figure — to a city whose to…
San Diego
San Diego is home to the US Navy's own Naval Health Research Center, which runs real, ongoing sleep research p…
Anchorage
Anchorage sees more than 19 hours of sunlight on the summer solstice — a real figure we independently confirme…
UK & Ireland
Long winter nights and short summer ones make circadian rhythm a bigger factor here than in most regions.
London
London sits far enough north that its daylight swings from under 8 hours in December to over 16 in June — one …
Manchester
Depending on which UK sleep survey you read, Manchester is either one of the best-sleeping cities in the count…
Dublin
A peer-reviewed study using 12 real noise-monitoring stations across Dublin found more than 80% of them record…
Edinburgh
Edinburgh's daylight swing — from under 7 hours in winter to over 17.5 hours in summer — is the largest of any…
Europe
Wide latitude range, from Mediterranean summers to Scandinavian midnight sun.
Paris
A large-scale academic study covering the entire Paris Metropolitan Area (roughly 10.5 million people) found a…
Berlin
A real study that put light sensors on Berlin residents' glasses for four consecutive winter days found they s…
Amsterdam
Amsterdam ranked 2nd out of 25 major European cities in a 2026 sleep-quality index, scoring just 4.09 out of 1…
Madrid
Contrary to the popular stereotype, real survey data finds fewer than 18% of Spaniards regularly take a siesta…
Stockholm
Stockholm's daylight swings from just over 6 hours in winter to nearly 18.7 hours in summer — a 12.55-hour ran…
Barcelona
Barcelona is consistently ranked as the noisiest city in Europe, with busy districts averaging 63.3 decibels —…
Valencia
A real, large-sample academic study — using the 2016 Valencian Community Health Survey of 5,485 residents — sp…
Seville
A real 2023 pilot study conducted in Seville during summer heat found something precisely measured: on nights …
Asia Pacific
Home to some of the world's most sleep-deprived populations, by national survey data.
Tokyo
Japan doesn't just have below-average sleep — by OECD's own 2021 comparison across 33 countries, it has the le…
Singapore
Singapore sits almost exactly on the equator, which means something most cities never experience: its daylight…
Sydney
A real 2023 study of Sydney traffic noise found something genuinely counter-intuitive: at similar average nois…
Mumbai
Academic research on light pollution in India specifically names Mumbai, alongside New York City, as a city th…
Seoul
A real, peer-reviewed study led by Dr. Kyoung-bok Min at Seoul National University College of Medicine found a…
Hong Kong
Hong Kong may be the most rigorously sleep-researched city on this entire hub: a decade-long night-sky-brightn…
Bangkok
Bangkok's skyglow levels are described as among the highest in the region by real, current 2025 environmental …
Middle East & Africa
Extreme heat and rapid urban light growth are the dominant local sleep factors here.
Dubai
Dubai residents average less sleep than the global norm, yet a 2026 report analyzing wearable-device data foun…
Tel Aviv
A real, large-sample, population-wide epidemiological study of sleep disorders in Israel — conducted with rese…
Cape Town
Cape Town sits just hours from Sutherland, home to the Southern African Large Telescope — the largest telescop…
Cairo
Cairo is measured as the second-noisiest city in the world, with an average noise level of 90 decibels — a rea…
Latin America
From high-altitude capitals to some of the most rigorously noise-monitored cities on this hub, sleep environment varies enormously across the region.
This is a small, growing pilot — more cities are added only once real, sourced data and genuine local research exist for them, rather than all at once from a template.