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You can display temperature of each location as individual dataseries of the chart, also known as multiseries chart. And humidity in another chart. The sample data(as shared above) can be categorized based on the location parameter and stored as a JSON object. Below is the code snippet for categorizing the data –

for(var i=0; i<data.length; i++){
    if(data[i].e in categorizedData)
      categorizedData[data[i].e].push({x: data[i].x, y: data[i][parameter], e: data[i].e});
      categorizedData[data[i].e] = [{x: data[i].x, y: data[i][parameter], e: data[i].e}];

Then you can use the same JSON object to populate charts based on the categorized data. Please take a look at this JSFiddle for an example.

multiseries chart to display temperature and humidity of different locations

Indranil Deo
Team CanvasJS