The extreme heat poses significant health risks, particularly for vulnerable populations such as older adults, children, and those without access to air conditioning. High humidity will make it difficult for the body to cool down, increasing the likelihood of heat-related illnesses. Nighttime temperatures in some areas will remain above 26°C (80°F), offering little relief. Additionally, wildfire activity is intensifying in the western US, with fatalities and injuries already reported among firefighters battling the blazes.