My 2013 i7 macbook air fans going full speed during regular use on windows 8

anybody? on the top leftside just above the brightness keys really heats up. I not sure it over heats but it gets pretty hot to the touch. The underside remains relatively cool. This is my first MBA, i'm used to my MB heating up on the underside. Either way I don't think its normal and i'm hoping someone can shed some light on the subject.

I'm using bootcamp.

Out of curiousity and for my own education, what is this process actually doing?

Ok I reset the SMC and ill monitor it for the next couple minutes to see if it makes a difference. I don't think it's just the "fans acting up" as it is in your case because the MacBook is actually generating a fair amount of heat and I know heat is the "enemy". That said I did research operating temperatures for this model and it seems between 46c - 97c is acceptable during various workloads. I noticed that running windows update almost immediately initiates the heating/fan cooling process. As I said just seems a bit odd that the machines work rate would be so high during normal/background process.. I checked the task manager and looked at the processes/usage and didnt notice anything "hogging" all the resources.

Thanks for all the suggestions so far, resetting the SMC may have done the trick. I tried playing Halo CE (yes ancient game) on it and it runs fine but the fans do trip on and info notice a fair amount of heat on the top left side. I know it's not a gaming laptop but this game is 10 years old with minimal requirements so an i7 8gb Ram shouldn't have an issue?

so i did some testing using Real Temp GT 3.70 (not sure if thats an accurate measure or if that program is compatible with the haswell chipset) and while playing halo for about 15 mins or so i saw temps of 75 celcius max, which is pretty hot when calculate into farenheit but still below what Anandtech saw during there "heavy" workload test. I guess my concern is the health/longevity of the CPU, i don't want to be "over stressing/Over heating" the CPU and decreasing the life of the notebook pre-maturely.