It is well known in primary school that "moving air forms wind". However, no wind equation or wind speed equation can be found in literatures or in internet before 2016.Why? Perhaps, the air has no shape, no boundary and no volume, how to set up an equation?The absence of research result on this topic for a long time sufficiently shows that it is a world-degree topic of difficulty. This book consists of 7 chapters. It introduces some cases of wind types (wind of a point in air, wind of circular cyclone, aerosol in air, and mushroom cloud), the derivation of equations and its solutions, are based on researched papers.Features : certain type, buoyancy and temperature are taken into consideration.Readers : Students, graduated students, teachers, engineers, scientists and readers interested in mathematics, physics and atmosphere. It is best that the readers have nice mathematical and physical background training.