Heat Safety: Heat Index WBGT is a free iPhone app developed by Qvyshift LLC, designed to prevent heat-related illnesses at outdoor work sites. The app provides heat index and WBGT values for locations in the USA, along with current conditions and 4-day forecasts sourced from the National Weather Service.

Users can access information such as current temperature, humidity, heat index, and WBGT, as well as forecasts for heat index and WBGT. The app categorizes risk levels based on standardized scales by OSHA-NIOSH and the US Army, aiding in planning outdoor work activities for safety and health.

With no login or subscription required, the app offers valuable insights for coaches, managers, and workers to mitigate the risks of heat-related illnesses like heat stroke and heat exhaustion. It helps users recognize hot conditions to prevent symptoms like weakness and dizziness, emphasizing the importance of hydration and rest breaks. Additionally, users can remove ads by opting for a one-time in-app purchase.