The heat wave poses significant risks, particularly for those without access to air conditioning. Prolonged exposure to high temperatures and humidity can lead to heat-related illnesses, especially in urban areas where overnight lows may not drop below 80 °F (27 °C). Vulnerable populations, including the elderly and those with pre-existing health conditions, are at heightened risk. The heat index, which accounts for humidity, will make outdoor activities dangerous, with values reaching up to 115 °F (46 °C).