Preventing the negative impacts of major, intersectional U.S. social issues hinges on personal concern and willingness to take action. We examined social comparison of COVID-19, racial injustice, and climate change during Fall 2020. Participants in a U.S. university sample (n = 288), reported personal levels of concern and action taken on these issues, and estimated their peers’ concern and action. Participants accurately estimated similar levels of personal and peer concern for racial injustice and climate change, but overestimated peer concern for COVID-19. At higher personal concern levels, people estimated that they took greater action than peers for all issues. Exploratory analyses found that perceived personal control over social issues increased participants’ concern and action for racial injustice and climate change, but yielded no change for COVID-19. This suggests that issue-specific features, including perceived controllability, may drive people to differently assess their experience of distinct social issues relative to peers.