Audio noise reduction - short video

Hi,
I have an edited video (around 2 minutes) which contains 4 soundbite interviews of around 15 seconds each. Unfortunately, due to shooting the interviews outside, and my terrible recording skills, the amount of audible noise is very bad. I've tried my best to reduce it in post, but I'm not a sound engineer, and the results aren't great. I'd appreciate any help in redoing the noise reduction, probably from the original recorded files, which I can then restitch into Premiere Pro.