AI data centers appear to be creating their own microclimates
As global temperatures rise, data centers for artificial intelligence are creating “heat islands” that could have significant impacts on communities and their surrounding environments in the years to come, a March 2026 study shows, raising alarm among international researchers. The preprint of the study, which has not yet been published in a peer-reviewed journal, looked at data from 2004 to 2024.Researchers from multiple institutions, including the University of Cambridge and Nanyang Technological University, used satellite data from that time to assess rising land surface temperatures at AI data centers worldwide. After conducting an analysis, they estimated that surrounding surface areas typically increase by an average of 2 degrees Celsius — or 3.6 degrees Fahrenheit — once AI centers start operating, suggesting that the data center heat island effect “is real and significant, especially in the context of global warming and climate transformation.” Overall, “our results show that the data heat island effect could have a remarkable influence on communities and regional welfare in the future,” researchers said in the study. The implications also suggest that building AI data centers in heat-stricken areas of California could have dire consequences on local communities. “We are one of the hottest places on Earth,” Anahi Araiza, the head of policy and community research for Imperial Valley Equity and Justice, previously told SFGATE. “It’s mind-boggling to believe that these projects won’t have an impact on our water and energy infrastructure or significantly contribute to air pollution and noise pollution.” Trump’s Environmental Protection Agency, however, seems eager to plow ahead on AI development. When SFGATE shared the study with the EPA press department and asked specific questions about data centers’ potential impacts, a representative said that under Lee Zeldin’s leadership, the agency plans to fulfill Trump’s goal to make the United States “the AI capital of the world” as part of the “‘Powering the Great American Comeback’ initiative.” “The Trump EPA understands that we can both protect the environment and grow the economy, fulfilling our core mission and first pillar: ensuring clean air, land, and water for every American,” EPA representatives told SFGATE. However, just this past week at a congressional hearing, Democrats accused Zeldin’s EPA of abandoning its core values to protect humans and the environment, the Guardian reported. Last summer, more than 150 staffers sent a letter to Zeldin expressing concern about his leadership, the New Yorker said, and on April 30, the publication described Zeldin spending his time “gutting the agency he runs.” In February, the EPA revoked a key finding that carbon dioxide and other greenhouse gases threaten public health — a key underpinning for the regulation of greenhouse gas emissions.
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