Rising nighttime temperatures are robbing Americans of sleep: Study
Hotter nights are quietly chipping away at Americans's sleep, says a new USC study.
By tracking over 14,000 adults with wearable devices for a decade, researchers found that every 10 °C jump in nighttime temps means 2-3 minutes less sleep and falling asleep takes longer.
Who's hit hardest?
Adults aged 40-50 lost the most sleep per temperature spike, but women were even more affected—losing about 23% more than men.
People with chronic health issues or lower incomes saw bigger drops in both sleep quality and duration.
West Coast residents felt nearly triple the impact compared to other regions.
Looking ahead
Most of this lost sleep happens during summer months.
If warming trends continue, US adults could lose up to a full day of sleep each year by 2099—especially in marine climate zones, where the effect is nearly twice as significant as in other regions.