 Sao José dos Campos, Brazil is experiencing rapid urbanization, leading to a significant increase in the urban heat island, UHI, effect. This effect is affecting the climate, environment and socio-economic development at a regional level. Landsat satellite imagery from 1986, 2001 and 2010 was analyzed to determine the spatial distribution of changes in temperature and land cover. Moderate correlations were found between urban and bare areas and higher temperatures, while areas covered in vegetation and water correlated negatively with higher temperatures. Additionally, a moderate correlation was found between the normalized difference built-up index, NDBI, and temperature. This article was authored by Vanessa de Silva Brumbostos and Igor Ogashuara.