What type of weather is known to inhibit cilia function, potentially causing a runny nose?

Cilia function relies on a thin layer of mucus to help trap and move particles out of the respiratory system. Cold weather can cause the airways to become dry and less humid, which negatively affects the mucosal layer and can lead to reduced cilia movement. This impairment hinders the clearance of mucus and pathogens, increasing the likelihood of nasal congestion and a runny nose. When the cilia are not functioning optimally, mucus can buildup, leading to symptoms associated with upper respiratory issues, such as a runny nose. Cold temperatures also induce physiological changes in the body that may further exacerbate these types of symptoms.