The extreme heat has posed significant risks to residents and visitors in Las Vegas, particularly those engaging in outdoor activities. High temperatures can lead to heat-related illnesses such as dehydration and heatstroke. Wind gusts of up to 30 MPH may also create hazardous conditions, especially for water activities at Lake Mead, where wave heights could reach 1.5 feet. The UV index for Saturday is expected to be very high at 9, increasing the risk of sunburn and skin damage.