Heat island is defined as an area which is urbanized and hotter than the surrounding rural areas. It is normally experienced when temperatures of an urban area rise beyond the temperatures of the suburban regions as well as the rural regions. A research study showed that in summer, the temperature of the surrounding air in the urban areas would rise between 6 oF to about 8 oF beyond the temperatures of the surrounding rural regions. Most of the activities taking place in the urban areas are the influential factors that affect the climatic conditions of those cities. The causes of urban heat effects include the destruction of natural vegetation due to construction of buildings together with other infrastructures in the urban areas. Waste heat which are released from the vehicles together with heat being released from factories, other industrial plants and air conditioners. To get broader perspective, contributing factors are discussed below.