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…
Canada
Long winters, high-latitude daylight swings, and some of the most rigorously monitored urban noise data on this hub.
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.
Copenhagen
A large Danish cohort study that recruited residents from Copenhagen and Aarhus found something genuinely rare…
Vienna
Astronomers at the University of Vienna spent roughly a year systematically measuring Vienna's night sky brigh…
Warsaw
A peer-reviewed light pollution study comparing Warsaw to Fukuoka, Japan found that almost all Warsaw resident…
Rome
A peer-reviewed health impact assessment modeled road traffic noise exposure across 2.6 million Rome residents…
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 …
Málaga
A real, peer-reviewed 2018 acoustic study measured Málaga's nightlife districts directly and found noise level…
Bilbao
Real, current (2026) reporting citing WHO and European Environment Agency data ranks Bilbao among Spain's five…
Asia Pacific
Home to some of the world's most sleep-deprived populations, by national survey data.
Jakarta
A study measuring noise from Jakarta's Jagorawi toll road found it remained detectable up to 114 meters from t…
Delhi
A peer-reviewed study that measured hourly noise levels at 100 separate sites across Delhi — commercial, indus…
Melbourne
A peer-reviewed statistical downscaling study mapped road noise health risk across Melbourne down to the meshb…
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.
Riyadh
A cross-sectional study of 548 adults in Riyadh, using the validated Athens Sleep Questionnaire, found an inso…
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.
Buenos Aires
Buenos Aires has operated a real, legally mandated noise-monitoring program since 2004 (City Law No. 1540), an…
Mexico City
Mexico City has something genuinely rare among cities on this hub: a real, direct household survey — the Epide…
Bogotá
A real, published polysomnography case study tested the same patient's sleep at three Colombian cities at diff…
Santiago
Santiago sits in a valley between the Andes and the Chilean Coast Range, a geography that traps winter smog vi…
Lima
Peru's environmental regulator OEFA directly measured noise at points across Lima and found the worst spot — t…
Quito
Quito sits at roughly 2,850 meters above sea level, making it the highest constitutional capital in the world …
Montevideo
A real, peer-reviewed 2023 study — the first of its kind in Montevideo — measured noise exposure directly on c…
Caracas
A real, peer-reviewed clinical study surveyed 1,357 adults in Caracas specifically and found 30.8% reported in…
Medellín
A real, peer-reviewed 2025 study measured environmental noise directly in specific Medellín districts (comunas…
Guadalajara
A real, very current (2026) peer-reviewed study measured noise directly across two University of Guadalajara c…
Córdoba
A real, direct measurement by Córdoba's own noise observatory found downtown levels of 85-90 decibels — with b…
Guayaquil
A real, peer-reviewed 2023 study used crowdsourced smartphone data to map noise levels across Guayaquil during…
Monterrey
Monterrey's semi-arid climate produces documented summer temperatures of 37-43°C between May and August, and a…
Cali
A real study backed by Cali's own environmental authority (DAGMA), the regional environmental corporation (CVC…
Valparaíso
Real, directly measured readings have captured peaks of up to 130 decibels on the central streets of Valparaís…
Arequipa
Arequipa, Peru's second-most-populous city, sits at a real, verified 2,350 meters above sea level — high enoug…
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.