Yes, Indonesias Paras Gold Yogya Limestone can be used for exterior applications in hot climates. This limestone is known for its durability and ability to withstand high temperatures, making it suitable for outdoor use in hot weather conditions. It has been extensively used in various architectural projects, such as exterior facades, pathways, and wall claddings, in countries with hot climates like Indonesia itself. However, it is always recommended to consult with a professional architect or contractor to ensure the suitability and appropriate installation for specific exterior applications.