A method for encapsulating electromagnetic propagation model features to create composable prediction models includes obtaining electromagnetic (EM) impediment data for a geographical area. The method also includes dividing the geographical area into a plurality of tiles. Each tile of the plurality of tiles includes a geometric shape that encompasses a distinct non-overlapping portion of the geographical area. For each tile of the plurality of tiles, the method also includes determining one or more composable EM attenuation values for EM signals propagating through the distinct non-overlapping portion of the geographical area encompassed by the tile using the EM impediment data and caching the one or more composable EM attenuation values determined for the corresponding tile.