The population explosion especially in the developing nations of the world makes urban sprawl a continuous issue in both mega and smaller cities in the said regions of the world. Sprawl in Ile-Ife is no difference and the crux of the research that is Urban Sprawl Increase Decoyer of Urban Heat Island and the Catalyst of Global Warming in Ile-Ife, Nigeria. The research made use of the Multi-date Landsat imageries of 1986, 2000 and 2017 (Landsat TM, Landsat ETM+ and Landsat OLI respectively) with spatial resolution of bam were used to assess the sprawl and land use/cover dynamics of the study area. GPS receiver was also used to capture the coordinates of features on ground. Daily temperatures of the study area were also sourced via internet. Results showed spatial pattern of land use/cover for the based years, land use/cover change analysis equally revealed spatial pattern of sprawl. Temperature readings supported tremendous increase in heat and plates of devastations in public buildings by storms also indicated the result of damages’ made to forest. The research therefore concluded with its recommendations that there should be adequate planning which should be strictly followed in the study area. There should be afforestation at the fringes of the city and that there should be promulgation against trees felling within and the surroundings of Ile-Ife.