The heat wave is expected to affect over 100 million people along the East Coast, posing risks of heat-related illnesses such as heat exhaustion and heat stroke. Vulnerable populations, including the elderly, children, and those with pre-existing health conditions, are particularly at risk. Outdoor workers and individuals without access to air conditioning may also face significant challenges. If the forecast holds, the National Weather Service may issue heat advisories or Extreme Heat Watches to alert the public. The combination of high temperatures and humidity could lead to dangerous heat indices, making outdoor activities hazardous.