the levels of radiation during the course of the day is of vital importance for all outdoor activities. Therefore, in this work we developed an ultraviolet radiation monitoring system, which allows knowing in real time the index of ultraviolet radiation in the municipality of Neiva. The system recorded the measurements made in a database and deployed through a web application; it allows knowing all present and past records captured by the system. In addition, through a mobile application this information can be accessed in real time and create alarms that alert users when the UV radiation index exceeds a predefined value by the user. Finally, in order to corroborate the reliability of the system, a validation of the system was carried out, comparing the data obtained by the designed system with the data from the Institute of Hydrology, Meteorology and Environmental Studies (in Spanish IDEAM) automatic weather station, generating high expectations in the operation of the designed system under normal environmental conditions.