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The rapid growth in population has led to the increase in the amount of solid waste disposed at dump yards. Every year, several tons of solid waste is being deposited into the Pallikaranai marshland, Chennai, India impacting the environment ominously and causing serious health issues. Using time series satellite images and gas sensors, the environmental changes over the years are determined and environmental changes in the near future are predicted. Satellite images of the area under study are obtained chronologically from CNES/Astrium and DigitalGlobe. The approximate area of the dump yard in each image is calculated by using Google Maps API. The variation in the area occupied by the dumpyard over the years is determined by using change detection technique. Gas sensors are used to measure the levels of various harmful gases such as methane compounds, Carbon Monoxide and Carbon …