fans at 100%

I have an: Evga 1080 ti I7 - 7820x Gigabyte x299 aorus gaming 7 16 Gb of ram Ax1200i PSU I noticed that for some reason my fans were running really loud when in idle. I checked my temperature and the cpu and you were both at 30 and 34 degrees centigrade. I felt outside the fans and the air was...