Climate change and increased demand for water are causing supply problems in the Mexico City and State of Mexico. The lack of complete and up-to-date meteorological information makes it difficult to understand and analyze climate phenomena such as droughts. Climate Engine (http://ClimateEngine.org) provides decades of climate data to analyze such changes. In this study, CHIRPS and DAYMET were used to calculate SPEI at scales of 1, 3, 6, 9, 12 and 24 months between 1981 and 2023 in the study area. The Mann-Kendall test for precipitation showed no significant change, while maximum and minimum temperatures showed a significant growth trend, which was reflected in the SPEI values. In the last 10 years, droughts have become more frequent and severe in the western part of the State of Mexico and south of Mexico City. When analyzing the last 14 years, the highest moisture values occurred in 2010, 2015 and 2018, while the most severe drought values were recorded in 2017, 2019, 2020, 2021 and 2023.