What is the relationship between air pressure and wind?

pressure = 0.002558 times velocity squared where velocity is miles per hour and pressure is pounds per square foot

for example a wind of 75 mph produces a pressure of

0.002558x75x75 = 14 .39 pounds per square foot

since there are 144 sq in in one sq ft that is 14.39/144 = 0.1 pounds per square inch

In meteorological terms, differences in pressure are what drive wind. Air generally moves toward an area of low pressure. However, due to the rotation of the earth it gets deflected in large scale weather patterns. It is deflected to the right in the northern hemisphere and to the left in the Southern Hemisphere.