Why is the front windshield blurry?

[Presley]

Front windshield blurriness occurs due to temperature differences between the inside and outside of the vehicle, leading to fogging, which makes it appear blurry. Below are the functions of a car's air conditioning system: Temperature regulation: This is the primary function of car air conditioning. In summer, the cooling system produces cold air to lower the temperature inside the cabin; in winter, except for large commercial vehicles that use independent combustion heaters, most vehicles utilize residual heat for warming. Humidity regulation: Humidity significantly affects passenger comfort. The humidity inside the cabin should generally be maintained between 30% and 70%. Standard car air conditioning systems do not have the capability to regulate cabin humidity; this can only be achieved by using ventilation systems or the advanced integrated heating and cooling systems found in luxury vehicles.