This Book discusses the effects of solid waste on urban warming in Warri, Nigeria. Data were generated through stratified sampling technique, where twenty five (25) neighbourhoods reflecting the size of the land use types used for the collection of volume of waste, greenhouse gases and temperature. While the thermometer was used to measure the temperature, a Testo 350 flue gas analyzer was used to measure the Hydrocarbons/volatile organic compounds (CxHy/VOC), Nitrogen Oxides (NOx), Sulphur Oxides (SOx) and Carbon Monoxide (CO) etc. The waste data were collected through a quadrant measurement of 1m by 1m from the five major dump sites in Warri and environs. The data generated were analyzed with most probable statistical techniques. The results showed an urban warming of 4.18oC and mean temperature of 32.5OC in Warri. It established a strong correlation between volume of waste and temperature in the area.It also revealed that an increase in greenhouse gases emission from waste dump sites leads to corresponding increase in temperature. Based on this, the local, state and federal government should sensitize the people on proper waste management measures and urban planning policies.