Climate change has been affecting people’s physical and mental health directly and indirectly. Previous research has focused on the impacts of climate change such as extreme heat on physical health. However, few studies have been conducted on the impact of climate change anxiety on people’s mental health, especially suicidal impulses. Thus, this study aims to empirically analyze the impact of climate change anxiety on suicidal impulses. For data analysis, 33,725 people aged 19 years or older and who completed the 2022 Statistical Korea social survey were included. Correlation analysis was conducted to identify the relationships among key variables. In addition, dichotomous logistic regression analysis was conducted to identify the impact of climate change anxiety as an independent variable on suicidal impulses as a dependent variable. Results from the correlation analysis showed that climate change anxiety was positively associated with suicidal impulses. Results from the dichotomous logistic regression also showed that climate change anxiety significantly predicted suicidal impulses, controlling for age, gender, education, household income level, marriage status, economic activity, self-rated health, and depression. This indicates that, as climate change anxiety has increased, the relative risk of suicidal impulses also has increased. Based on these results, policies and services were suggested for people vulnerable to climate change anxiety.