The ongoing extreme heat in Phoenix is disproportionately affecting vulnerable groups, including older adults, the homeless population, and individuals using drugs like methamphetamines. Sixty percent of the fatalities in 2025 were among people aged 50 or older. The persistent high temperatures and elevated overnight lows increase the risk of heat-related illnesses and fatalities, especially for those without access to cooling or shelter. With 584 deaths still under investigation, the total toll for 2026 could surpass previous records, highlighting the urgent need for preventive measures.