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Researchers found that large data centers in the Phoenix area can raise local ambient temperatures by up to about 4°C, driven by waste heat from cooling systems and intensive server loads. The study compared thermal imagery and surface temperature records around multiple facilities, identifying measurable heat islands downwind and in adjacent urban neighborhoods. Key players include academic researchers and operators of hyperscale cloud and colocation data centers; the finding matters because lo
Waste heat from large data centers can measurably increase local air temperatures, amplifying urban heat island effects and affecting cooling loads, infrastructure resilience, and community comfort. Tech professionals need to factor facility thermal emissions into site selection, cooling design, and sustainability planning.
Dossier last updated: 2026-05-21 06:45:56
Tech Xplore : A study conducted in the Phoenix metro area finds that waste heat from data centers can raise air temperatures in downwind neighborhoods by as much as 4°F — Waste heat from data centers can boost air temperatures in downwind neighborhoods by as much as 4 degrees Fahrenheit …
Arizona State University researchers directly measured that waste heat from Phoenix-area data centers can raise downwind neighborhood air temperatures by an average of 1.3–1.6°F and as much as 4°F, detectable up to a third of a mile away. Using fast-response temperature sensors mounted on multiple cars, the team compared upwind and downwind readings around four large air-cooled facilities (36 MW to 169 MW) between June and October 2025. The study — the first to record real-time, ground-level thermal plumes from data centers — highlights growing local heat impacts as U.S. data center capacity expands and urges planners and industry to consider mitigation, especially in heat-vulnerable cities.
Data Center Waste Heat as an Emerging Urban Thermal Hazard
Researchers found that large data centers in the Phoenix area can raise local ambient temperatures by up to about 4°C, driven by waste heat from cooling systems and intensive server loads. The study compared thermal imagery and surface temperature records around multiple facilities, identifying measurable heat islands downwind and in adjacent urban neighborhoods. Key players include academic researchers and operators of hyperscale cloud and colocation data centers; the finding matters because local warming can compound urban heat island effects, strain cooling and energy systems, and create regulatory and design pressures on operators. The study highlights the need for better cooling efficiency, siting practices, and policy coordination to limit local climate impacts.