A process for real-time language detection and language heat map data structure modification includes a computing device receiving, from a first electronic audio source, first audio content and identifying a first geographic location of the first audio content. The computing device then determines that the first audio content includes first speech audio and identifies a first language in which the first speech audio is spoken. A first association is created between the first geographic location and the first language, and a real-time language heat-map data structure modified to include the created first association. Then a further action is taken by the computing device as a function of the modified real-time language heat-map data structure.