In 2022, the National Health Council launched its research brief series with an inaugural brief on climate change and its intersection with chronic disease. While it has become apparent that climate can have severe long-term health effects on chronic conditions and disrupt the health care ecosystem, extreme heat events have emerged as an important public health concern. As hotter days become more frequent, the effects of higher temperatures put patients with one or more chronic conditions and members of vulnerable communities at a higher risk for negative health outcomes. These health outcomes include the exacerbation of existing condition/s, heat stress, heat-related illness, or even heat stroke. Efforts to mitigate heat exposure and other climate change impacts often occur through high level policies or programs. However, patient organizations, researchers, practitioners, and others within the health care ecosystem can make individual or community-level impacts on patient engagement and climate conversations by improving communication of environmental risks.