Ecohydrological information was collected during the period 2013 to 2015 as part of the project "Ecohydrological observations to improve hydrological models estimates in the Sonora River Basin." This project was managed by the Sonora Institute of Technology (ITSON), the University of Sonora (UNISON), Arizona State University (ASU), the New Mexico Institute of Mining and Technology (NMT) and was funded by the National Science Foundation (NSF), the National Oceanic and Atmospheric Administration (NOAA) and the National Council of Science and Technology (CONACYT). Data were obtained at the Sierra Los Locos ecohydrological monitoring station, located at the watershed divide of the Sonora and San Miguel river basins in the state of Sonora, Mexico. This station was established with the objective of acquiring data of ecohydrological importance that helps the parameterization, validation and calibration of hydrological and vegetation models. Atmospheric variables, temperature and relative humidity were measured using a CAMPBELL CS215-L sensor to subsequently estimate vapor pressure deficit (VPD). Wind speed was measured using a MET ONE 014 sensor while precipitation was measured using a Texas electronics TR-525M automatic rain gauge.