Several studies show that climate change has a mental impact on many young people. Given the number of young people who experience mental burdens related to climate change, and the relative novelty of climate change as a theme in youth development, it is important to explore the core elements of their experience and what youth professionals observe in terms of climate stress and other reactions from young people as they become more aware of climate change. The concerns, stress, and other reactions as told by youth and seen by youth professionals vary widely. There are various perspectives on the explanatory factors, personal characteristics, situational factors, and complicating elements connected to the topic of climate change, that according to youth professionals contribute to these differences. Supporting youth professionals can help raise awareness of and address the impact of climate change on young people.