Nissan Altima 2006 runs for an hour and then the Engine Overheats

What is your question?

My Nissan Altima 2006 runs for sometime and then the Engine Temperature goes straight up and also the coolant level in the engine is low everytime i check which means it is burning. I had replaced the Heater core last year. Also, i feel hot air coming inside the car cabin. What could be the issue?

How long has your 2006 Nissan Altima had this problem?

A few Months