As a result of loosing green space, the excessive heat built-up in the cities and urban areas combining with smog, lenses of hot smoggy air deflect weather systems over and around the cities and then lead to urban heat island effect. The urban heat island effect is a metropolitan area that is extensively warmer than its neighboring rural areas. Majority of this heat comes from the large amount of hard surfaces, including exposed walls which spread out the sun’s energy. Installation of green walls has shown to reduce this effect and improve the quality of urban living [10].