IDW Cutoff at certain distance

Is there any way to cut off an IDW interpolation so that it doesn't extend beyond a certain point? I'm looking at pollutants and in some cases the IDW method is interpolating several hundred miles out with only one site in the area, and it's unrealistic to think that that is going to create a realistic scenario of pollution distribution. So, I was wondering if there was a way to set a max distance of interpolation so that at some point it just goes to white to indicate insufficient data points in the area.

Thanks