Yes, I’ve been following the latest research, and rooftop gardens can lower nearby air temperatures by a few degrees – usually around 2 to 4°C during the hottest part of the day, and sometimes even more in the evening. The plants release moisture through transpiration, which cools the air, and the green surface takes up less heat than concrete. It’s a small but noticeable change, especially when you add other green‑infrastructure elements to the mix.