I took my grandkids to a playground today that has a small pond in it. The entire pond was iced over with what looked like about 1 inch of ice, or maybe slightly less.
With the forecast for this week, it's bound to be safe ice very soon.
This pond is very shallow, so the water temp drops quickly, unlike deeper water bodies. But with daytime highs most of this week only in the mid 30s, and nighttime temps dropping into the low twenties, just about everything will be iced in very soon.