The heatwave is expected to affect a vast swath of the U.S., including urban and rural areas from Utah to the Northeast. Vulnerable populations, such as the elderly, children, and those with pre-existing health conditions, are at heightened risk of heat-related illnesses. Prolonged exposure to high temperatures can lead to dehydration, heat exhaustion, and heatstroke. Additionally, the strain on power grids due to increased air conditioning use may lead to outages, compounding the risks for affected communities.