tomato leaf curl
The tops of my tomatoes are starting to curl. I see no signs of bugs and they are watered sufficient.
Utah County Utah ipm
Tomato leaf curl is a common physiological problem with unknown causes, most likely adaptation to heat. But on your tomatoes, it almost looks like herbicide injury. If any herbicides were applied to nearby turf, that could explain it. Either way, the plant will overcome and the fruit will be fine to eat (only the foliage is affected).