ListDensityPlot should work in your case as shown in
this documentation example. Just reproducing it here. Get data to show a map of Illinois according to the elevation of its cities:
cities = Cases[CityData[All], {_, "Illinois", "UnitedStates"}];
data = Table[{CityData[c, "Longitude"], CityData[c, "Latitude"], CityData[c, "Elevation"]}, {c, cities}];
Note the data have in principle similar to your case dimensions:
data // Dimensions
(* ========= out =========
{1313, 3}
========= out ========= *)
Now plot:
ListDensityPlot[data, AspectRatio -> Automatic, ColorFunction -> "DarkRainbow"]
