This website is the digital version of the 2014 National Climate Assessment, produced in collaboration with the U.S. Global Change Research Program.

For the official version, please refer to the PDF in the downloads section. The downloadable PDF is the official version of the 2014 National Climate Assessment.

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Welcome to the National Climate Assessment

The National Climate Assessment summarizes the impacts of climate change on the United States, now and in the future.

A team of more than 300 experts guided by a 60-member Federal Advisory Committee produced the report, which was extensively reviewed by the public and experts, including federal agencies and a panel of the National Academy of Sciences.

Explore the effects of climate change
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Highlights

The Highlights provides a concise version of the full report including an Overview, select evidence for the 12 Report Findings, and summaries of the impacts of climate change on every region of the United States.

Explore Highlights of how climate change is affecting the United States.

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Overview

Similar to an Executive Summary, the Overview presents important results of the National Climate Assessment. It reviews observed and projected changes in climate, impacts of these changes on U.S. regions and sectors, and options for responding.

Report Findings

The 12 Report Findings distill important results from the National Climate Assessment. Not a full summary of all the chapters’ findings, these findings provide a synthesis of particularly noteworthy conclusions.

Regions

Evidence of climate change appears in every region and impacts are visible in every state. Explore how climate is already affecting and will continue to affect your region.

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The National Climate Assessment summarizes the impacts of climate change on the United States, now and in the future.

A team of more than 300 experts guided by a 60-member Federal Advisory Committee produced the report, which was extensively reviewed by the public and experts, including federal agencies and a panel of the National Academy of Sciences.

United States Global Change Research Program logo United States Global Change Research Program participating agency logos