I have no clue why I didn't think about this, but I have had this computer for 5 years and I have never dusted it out! I guess since I have never encountered this type of problem I never really thought about it.
Well, I dusted out the inside. There was a lot of dust around the exhaust fan which could prevent some of the hot air from dissipating. I am guessing this was the culprit. If this doesn't work I will probably try moving the case outside my desk on the floor for better ventilation.The case is inside of a cabinet on the side of my desk which appears to be made for a case. If THAT doesn't work I will probably look at replacing the fans.
Thanks a lot for your help! I will let you know if I still encounter the same problem after trying the aforementioned steps.