iMac temperature climbing too fast.

Hello, I'm extremely worried because the temperature on my iMac has been increasing too fast and to degrees I had not seen it climb before, it usually is at 89ºF to 92.5ishºF

But recently it has been climbing up to 95º when only watching a video in one tab and having Facebook (idle) in another. I mostly use it for that recently, although I've been playing some vanilla Minecraft and some browser-based games.

I'm using Macs Fan Control and that's what tells me the temperature (although I also have smcFanControl installed, but it doesn't run on startup, I couldn't figure out how to use that one well enough.)

I'm using a 21.5-inch, Mid 2011 with OS X Yosemite.

There is a little bit of background on this thread if that helps.

Editing to add:

• I thought perhaps one of the fans had stopped working, but the fan control program shows all three of them are.
• Before it was only the top left corner (facing the screen) that would feel hot, it doesn't feel particularly hot lately but behind the apple and on the other side of the back feels a bit warm.)

Thank you.

Message was edited by: rasamalai