As climate change increasingly affects daily life, raising climate-risk awareness and motivating individuals to adopt protective behaviors is crucial. Although advances in climate data collection and analysis have yielded a detailed understanding of risks—such as the rising frequency of extreme weather events—among scientists and policymakers, it remains unclear how to communicate this knowledge to the broader public in a way that fosters lasting risk perception and action. Drawing on the theory of boosting, we propose that providing individuals with meta-knowledge about psychological biases in detecting and responding to climate risks strengthens both long-term risk perception and protective behaviors, such as ongoing, digitally enabled climate-risk monitoring. Building on psychological-ownership theory, we further predict that perceived involvement in designing web-based, real-time climate-risk information increases the use of this information for monitoring behavior. To test these propositions, we implemented a 2 × 2 factorial longitudinal field experiment in a medium-sized German city (N = 184). Participants received personalized, web-based, real-time indoor heat-risk information. We manipulated (a) participant involvement in the design of the heat-risk information (high vs. low) before website access and (b) the type of message provided after two weeks of website access (meta-knowledge about cognitive biases vs. a standard heat-risk message). We assessed participants' self-reported heat-risk perceptions and protective behaviors, as well as their actual web-based heat-risk monitoring behavior across the study period. Data collection concludes on September 30, 2025, and results on the main and interaction effects of the interventions on risk perceptions and observed monitoring behavior will be presented at the Congress of Applied Psychology. These findings will advance understanding of how communicating meta-knowledge about cognitive biases and involving citizens in conceptualizing real-time risk information can sustainably enhance climate-risk perception and promote lasting protective action, offering actionable insights for policymakers and practitioners seeking to strengthen climate resilience.