Climate change and its consequences are one of the most important challenges humanity is facing today, and therefore it is important to understand why individuals adopt or do not adopt pro-environmental attitudes, whereby personality traits can serve as an explanation. Considering the previously expressed interest of students in the mentioned topics, climate change as one of the most important current environmental problems, the possible mediating role of attitudes between personality traits and concern for environmental problems and interest in climate change, the aim of this study was to examine the connection between proenvironmental attitudes, interest in climate change, concern for environmental problems and personality traits in a sample of students. The results were collected through an online questionnaire with self-report scales. The New Ecological Paradigm Scale (Dunlap & Van Liere, 1978), was used as a measure of pro-ecological attitudes, the HEXACO personality trait questionnaire (Lee & Ashton, 2009) as a measure of personality traits and the Scale of Environmental Concerns and the Scale of Interest in climate change by Hadžiselimović (2015) as the scale of interest in climate change and concern for environmental problems. The sample consisted of 215 students exclusively from the territory of the Republic of Croatia, with the majority of them being female (74.88%), as well as undergraduate students (73.96%). The correlation between expressed pro-environmental attitudes and interest and concern for climate change was tested, and a moderate positive significant correlation between expressed proenvironmental attitudes and both variables was found. A weak significant positive correlation was also found between openness to experience, but also conscientiousness and interest in climate change, while a significant positive correlation for climate change concern was only found with the dimension of emotionality. Finally, a weak statistically significant positive correlation was found between the results on the dimension of emotionality and proenvironmental attitudes.