What results in the creation of wind?

Wind is primarily generated by differences in atmospheric pressure, which is typically caused by variations in temperature. When the sun heats the Earth's surface unevenly, it creates areas of high and low pressure. Air moves from regions of high pressure to areas of low pressure in an attempt to equalize these differences, resulting in wind.

While temperature differences do play a critical role in creating pressure differences—therefore indirectly shaping wind patterns—they are not the immediate cause of wind itself. Humidity changes can affect local weather conditions and can modify air density, but they do not directly create wind. Thermal expansion does occur as temperatures fluctuate, leading to changes in air density, but it is also a contributing factor to pressure differences rather than a direct cause of wind. Thus, the most direct reason for the creation of wind is the differences in atmospheric pressure.