I would be inclined to say that the above table is the result of hysterical Argentinians being, well, hysterics. There is no way a humidity of 44% (from the first line of the table), which is actually pretty low, would cause a 10 degree difference between actual and perceived temperatures. But the yellow press here is also claiming rainfall figures that would have us all swimming and using water buses. Here's a table showing how the heat index (aka thermal sensation) and actual temperature are related, depending on humidity:
For my location, in Zona Norte, with 26 degrees and 88% humidity right now, the thermal sensation according to the chart and also my phone is 30 degrees. Warm and sticky certainly, but nothing worse than that.