Ultraviolet (UV) radiation is part of the optical spectrum of the solar light. Exposure to ultraviolet radiation for prolonged periods of time can cause damage to skin cells and lead to the development of both non-melanoma cancer and melanomas. Workers in constructions sites are particularly susceptible to exposure in UV radiation due to the prolonged periods of staying in outdoors areas that offer no protection from the sun rays. This paper presents a fuzzy logic system that monitors the UV levels at particular construction sites, the environmental conditions that can affect UV as well as the location of workers and can provide notifications and alerts to both the workers and health and safety managers at each site.