This paper investigates the impact of CEOs' personal climate awareness on corporate greenhouse gas emissions, and the role of information in forming such awareness. Climate awareness of CEOs is measured by their experience of extreme weather during their impressionable years in combination with the availability of climate change information at the time. I find that high climate awareness of CEOs is associated with lower carbon intensity of their firms. The translation from extreme weather experience to climate awareness is facilitated by knowledge about climate change, thus, the emission reduction effect is driven by extreme weather experience gained after the science of climate change was introduced to the public. CEOs who were likely to encounter misinformation during their impressionable years tend to misinterpret their experience, such as regarding severe winter weather as counter-evidence for climate change, and generally overlooking extreme weather that is not directly related to rising temperatures. Evidence from plausibly exogenous CEO turnover events supports the emission reduction effect of CEO climate awareness to be causal. This study presents CEO personal climate awareness as a determinant of corporate emission policies and shows that such awareness can be induced by a combination of extreme weather experience and climate change information. Adding to the literature about managers' personal experience, this study emphasizes the mediating role of information in translating experience into behaviours, highlighting that one's interpretation of her experience is as important as the experience itself.