A method, apparatus and computer program product are provided to analyze and visualize two or more parameters of spatial data. In the context of a method and for each of a plurality of grid cells, an aggregated representation is identified of the data value(s) associated with a respective grid cell and a count of data values that are associated with the respective grid cell. The method also applies a smoothing function to create a smoothed representation of the data value(s) associated with the respective grid cells and to create a smoothed count of the number of data values that are associated with the respective grid cell. For each of the plurality of grid cells, the method causes presentation of a visual depiction of: (i) a value based on the smoothed representation and the smoothed count of the respective grid cell and (ii) the smoothed count of the respective grid cell.