The AI Boom’s Hidden Cost: Data Centers Are Creating Heat Islands Across the World’s Cities
As the artificial intelligence boom drives an unprecedented surge in data centre construction, a growing body of research highlighted in a Bloomberg investigation, reveals a troubling consequence: these facilities are significantly heating the communities around them. Bloomberg
A Cambridge-led study found that land surface temperatures around data centres rise by an average of 2°C, with some areas recording spikes of up to 9°C. The effect extends up to 10 kilometres from each facility, placing more than 340 million people within the reach of what researchers call the “data heat island effect.”
The scale of expansion is staggering. Globally, hyperscale data centre numbers have nearly doubled since 2021, from 700 to 1,297 facilities. Tech giants plan $5.3 trillion in capital expenditure on AI infrastructure between 2025 and 2030. A single 100-megawatt facility consumes roughly 2.5 billion litres of water annually, enough for 80,000 people.
By 2035, US data centres alone are projected to consume more natural gas than Germany and Japan combined, generating an additional one million metric tonnes of greenhouse gases daily.
Community resistance is mounting. Cities including Denver, Indianapolis, and New York have imposed moratoriums on new large-scale data centre projects as residents push back against noise, water use, and environmental degradation.
Read our previous articles on weather, climate, pollution and AI here.
