Denver, Las Vegas, and Phoenix all had record-breaking high temperatures this month.
Americans are gearing up for a sweltering summer across the country.
Cities are underprepared to handle the challenge, however, despite the likelihood of increasingly frequent and extreme heat waves, claims a research team led by UCLA.
They examined municipal planning papers from 50 sizable cities across the nation for their most recent study, which was published in the journal Environmental Research Letters.
The researchers discovered that while only a few of these communities' climate plans specifically addressed the issue of heat, 78% of them acknowledged it as a problem.
Even fewer discussed the disproportionate effect that heat has on communities of color and low-income residents.
According to a UCLA study, heat raises the risk of workplace injuries for employees, causes more preterm deliveries, and makes it harder for pupils to learn.
The regulation of heat has long lagged behind other climate change-related risks despite these detrimental and widespread effects.