This paper is primarily focused on the implementation of real atmospheric conditions into the MPMM flight model using MATLAB programme. Before introducing the implementation and modification of the program, the atmospheric models and its parameters are theoretically explained. Subsequently, the influences of sound speed, air density and wind components are presented graphically and in table. Special attention is given to the behaviour of sound speed and density in real atmospheres. The results of the impact points are presented in tables for easier comparison with the results for the standard atmospheres (without the METCM file). Additionally, the results of the impact points between linear and cubic spline interpolation will be compared, with the emphasis on the range and direction of the projectile. Two trajectories for real atmospheres and the trajectory for the standard atmosphere (without the METCM file)are shown in the same side view of the trajectories. Key parts of the projectile's trajectory such as the peak of the path and the impact point, are detailed and analyzed. The flight speed for the mentioned trajectories is observed, with its behaviour through characteristic points, also shown and described. How the wind, especially the lateral wind, affects the trajectory is visualized by showing the wind speed vector across the missile trajectory. The work, i.e. the progrma, with further modificaitons related to internal ballistics and atmospheric factors, can potentially be used as a fire control system.