As long as you are aware of where any moving waters may be, most ponds should have good ice for a few weeks to come.
I fishing Gorham Pond in Dunbarton (Southern NH) on Sunday and the ice/frozen snow mix was over 2 feet thick. (1/2 solid ice on the bottom, 1/2 frozen snow on top)
Keep in mind, as I'm sure others will attest to, that the shorelines will erode first. Then there's also the addage: When the ice goes grey, it's time to stay away!"
Still, as long as you play it safe and don't push your luck, you still can hit the ice....only carefully!