The Earth atmosphere, its composition and vertical division. The temperature behavior and heat transfers in the atmosphere. The air humidity and water phase changes in the atmosphere. The air pressure, its horizontal and vertical changes. The wind, its definition, measuring, the origin of the wind, vertical wind change, the global atmosphere circulation, the local atmosphere circulation systems. Air fronts and air masses. The aerological output and its interpretation, the atmosphere stability. Dispersion conditions in dependence on meteorological conditions. Basics of the Earth climatology. Typical meteorological situations on middle geographical latitudes. The weather observation, the meteorological data sources. Models for the weather and air pollution dispersion. The weather forecast focused on pollution dispersion conditions.