Temperature sensor on Marq expedition isn’t real temperature?

I did two hikes with Marq expedition and temperature data was way off, about 15 to 20 degrees more than real temperature. Customer support tell me its not the real temperature but the sensor is close to my skin si it’s temperature around that.

but why would anyone care about skin temperature?

i am interested in real temperature so I know what was wearher weather and how was my performance accordingly. 

They could take out temperature sensor if its skin temperature. I don’t think anyone would be interested in that.