---
title: "Why extreme heat is a growing threat to the world's computers"
description: "From the data centers behind the internet to the phone in your pocket, computing depends on staying cool. As heatwaves grow more frequent and AI drives power use ever higher, keeping the world's machines from overheating is becoming a serious engineering challenge."
category: "Technology"
category_url: https://newsparlor.com/category/technology
author: "Noah Andersen"
published: 2026-07-02T00:16:00.000Z
updated: 2026-07-02T00:16:00.000Z
canonical: https://newsparlor.com/article/why-extreme-heat-is-a-growing-threat-to-the-world-s-computers
tags: ["data-centers", "heat", "climate", "technology", "cooling"]
---
# Why extreme heat is a growing threat to the world's computers

From the data centers behind the internet to the phone in your pocket, computing depends on staying cool. As heatwaves grow more frequent and AI drives power use ever higher, keeping the world's machines from overheating is becoming a serious engineering challenge.

Computers do not like the heat. Every chip turns electricity into both work and warmth, and when that warmth cannot escape fast enough, machines slow down, shut off or wear out sooner. As the world both heats up and leans ever harder on computing, that basic fact is turning into a growing vulnerability.

## What heat does to a chip

Processors are built to run within a temperature range. When they get too hot, they protect themselves by "thermal throttling" — deliberately slowing down to produce less heat. That prevents damage but cuts performance, and if a machine cannot shed heat at all, it will eventually switch off entirely.

Sustained high temperatures also age hardware. Chips and the tiny solder joints connecting them expand when hot and contract when cool; repeated over months and years, that cycling can cause microscopic cracks and gradual failure. Batteries are especially sensitive: lithium-ion cells degrade faster in heat and, in extreme cases, can become a fire risk, which is why phones dim, slow down or refuse to charge when they get too warm.

## Data centers on the front line

Nowhere is the problem more acute than in the data centers that run the internet, cloud services and, increasingly, artificial intelligence. These facilities pack thousands of power-hungry chips into confined spaces, and much of the electricity they draw ends up as heat that has to be removed — often using large cooling systems and significant amounts of water.

That makes them doubly exposed to a warming climate. As [Scientific American has reported](https://www.scientificamerican.com/article/extreme-heat-endangers-ai-data-centers/), the surge in AI computing is pushing power and heat density to new highs just as heatwaves become more common, straining the cooling systems these sites depend on. Higher outdoor temperatures make cooling less efficient and more energy-intensive, while droughts can limit the water many facilities use to keep servers cold.

## When the cooling fails

The risks are not hypothetical. During a record-breaking heatwave in the United Kingdom in July 2022, cooling systems at data centers operated by Google and Oracle in the London area failed, knocking some services offline for hours. Such incidents illustrate how a spell of extreme weather can ripple outward, disrupting the online systems that businesses and the public rely on.

The World Economic Forum has framed cooling as one of the central challenges facing the fast-growing data-center industry, [noting the enormous investment](https://www.weforum.org/stories/2025/10/data-centres-3-3-trillion-question-heat-cooling/) at stake as operators try to keep pace with demand while managing heat and water use.

## Keeping cool

Engineers have a range of responses. Many operators are moving from air cooling to liquid cooling, which carries heat away more efficiently, and some are experimenting with immersing servers directly in special non-conductive fluids. Others site new facilities in cooler climates or redesign power and airflow for efficiency. In consumer devices, manufacturers use heat-spreading materials and software that eases off demanding tasks when temperatures climb.

None of these fully escapes the underlying physics: the hotter the surroundings, the harder and costlier it is to keep sensitive electronics within safe limits. As computing demand climbs and hot spells intensify, managing heat is shifting from a background technical detail to a defining constraint on how — and where — the digital world can keep expanding.

## Sources

- [Extreme Heat Endangers AI Data Centers](https://www.scientificamerican.com/article/extreme-heat-endangers-ai-data-centers/)
- [The $3.3 trillion question: Can data centres take the heat?](https://www.weforum.org/stories/2025/10/data-centres-3-3-trillion-question-heat-cooling/)