Hot air coming out of the nose may be caused by the cold temperature of the outside environment, or it may be caused by boils in the nasal vestibule or body heat. 1. Cold ambient temperature: If the ambient temperature is low, the gas inhaled and exhaled from the nose may be relatively hot, resulting in hot air coming out of the nose; 2. Nasal vestibule boils: If there are boils in the nasal vestibule, the nose may feel burning, and the exhaled gas may feel hot and usually tingling; 3. Body heat: If you have a cold that causes your body to become hot, the temperature inside your nasal passages may rise, resulting in hot air coming out of your nose. It is recommended to actively go to the relevant departments of specialized hospitals for examination, and if the disease is caused by factors, you need to follow the doctor’s advice to adopt the appropriate solutions.