ANSWER :)) Read the excerpt from “Understand Wind Chill.” The Wind Chill index is the temperature your body feels when the air temperature is combined with the wind speed. It is based on the rate of heat loss from exposed skin caused by the effects of wind and cold. As the speed of the wind increases, it can carry heat away from your body much more quickly, causing skin temperature to drop. What is the best summary of this excerpt? The wind chill index describes the temperature as people feel it, not just as it reads on a thermometer. It measures the rate of heat loss. People should consider the wind chill index when dressing for cold temperatures. The wind chill index is the temperature bodies experience when the air temperature is combined with wind speed. This is based on the rate of heat loss at various wind speeds, and it is often described on television weather reports. The temperature experienced when air temperature is combined with wind speed is called the wind chill index. It is a more important measurement than air temperature alone, because it explains how temperature affects bodies. The temperature a body feels when air temperature is combined with wind speed is called the wind chill index. This measurement is determined by how quickly heat is lost. The faster the wind speed, the more quickly skin cools.