Heat-related deaths have soared in Maricopa county over the past decade, with 645 in 2023 compared to 61 in 2014. The county has become increasingly unlivable for many amid record-breaking heatwaves driven by the global climate crisis, unchecked urban sprawl and an affordable housing crisis – which combined with patchy mental health and substance misuse services has contributed to a growing unsheltered population.
Last year, heat deaths fell for the first time in a decade to 608, according to official figures, but the city and county have since come under fire for alleged undercounting. A recent investigation by the local TV station ABC15
identified multiple cases in which heat was discounted as a factor despite the person dying in extreme temperatures.