Synopsis The Science of Weather and Environment is very complex, each affects the other. It involves many basic sciences. This book deals with the principal aspects of weather, climate environment and its pollution both natural and man-made. Features: Briefly deals with natural hazards, droughts and floods, cyclones, storm surges, Tsunamis, earth quakes, avalanches and land slides. Artificial Satellites and use of Satellite based weather data in detection of tropical cyclones, monitoring forecasting and use of Satellites in disaster warnings are explained. Turning to environment, it briefly deals with air pollution, acid rains, disposal of pollutants, NAAQ standards. Water, its pollution, hardness and softness of water, drinking water standards in India, water conservation methods are presented.  A separate chapter on Aviation Meteorology is added to meet the demands of weather services by Trainee Pilots in Civil Aviation.