Yes, Irans Conglomerate Marble can be used for exterior applications in hot climates. Marble is known for its durability and ability to withstand high temperatures. However, it is important to note that not all marble varieties are suitable for external use, especially in extremely hot climates. It is recommended to consult with a knowledgeable professional or supplier to ensure that the specific marble variety you are considering is suitable for the intended use. Additionally, proper installation and maintenance are crucial to maximizing the longevity and performance of the marble in hot climate conditions.