Yes, Irans Cream Limestone can be used for exterior applications in hot climates. Limestone is a natural stone that is durable and can withstand extreme temperatures. However, it is important to choose a type of limestone that is suitable for the specific climate and environment in which it will be used. The cream-colored limestone from Iran is particularly suitable for outdoor use due to its ability to resist weathering, erosion, and UV rays. It is also commonly used in areas with high humidity such as coastal regions.