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Every Single Day of 2023 Was Extraordinarily Hot

Here are some more numbers from today’s big temperature announcement.

01/09/2024

Heatmap Illustration/Getty Images

You have almost certainly heard already that 2023 was, officially, the hottest year on record. That announcement came this morning from Copernicus, the European Union’s Earth data service.

There was another figure in that announcement, however, that caught my eye: 2023 was also the first year in which every single day was at least 1 degree Celsius hotter than the pre-industrial average.

Chart of 2023 daily average temperatures relative to pre-industrial average.

That is a marked contrast to 2022, our sixth hottest year on record, which had several days less than 1 degree above the pre-industrial average and a maximum temperature difference around half a degree lower than last year’s.

Chart of 2022 daily average temperatures relative to pre-industrial average.

Just for kicks, I decided to make the same chart for 1940, the earliest year represented in this particular dataset. As you will perhaps notice, I had to adjust the scale to account for temperatures below the pre-industrial average.

Chart of 2022 daily average temperatures relative to pre-industrial average.

The last time the global daily average temperature came in below the pre-industrial average, according to the Copernicus data, was October 8, 1992.

Jillian Goodman

Jillian is Heatmap's deputy editor. Before that, she was opinion editor at The Information and deputy editor at Bloomberg Green.

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Meta’s Major AI Energy Buildout

CEO Mark Zuckerberg confirmed the company’s expanding ambitions in a Threads post on Monday.

Matthew Zeitlin •

07/14/2025

Justin Renteria/Getty Images

Meta is going big to power its ever-expanding artificial intelligence ambitions. It’s not just spending hundreds of millions of dollars luring engineers and executives from other top AI labs (including reportedly hundreds of millions of dollars for one engineer alone), but also investing hundreds of billions of dollars for data centers at the multi-gigawatt scale.

“Meta is on track to be the first lab to bring a 1GW+ supercluster online,” Meta founder and chief executive Mark Zuckerberg wrote on the company’s Threads platform Monday, confirming a recent report by the semiconductor and artificial intelligence research service Semianalysis.

That first gigawatt-level project, Semianalysis wrote, will be a data center in New Albany, Ohio, called Prometheus, due to be online in 2026, Ashley Settle, a Meta spokesperson, confirmed to me. Ohio — and New Albany specifically — is the home of several large data center projects, including an existing Meta facility.

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Trump Will ‘Deal’ with Wind and Solar Tax Credits in Megabill, GOP Congressman Says

“We had enough assurance that the president was going to deal with them.”

Katie Brigham • Jael Holzman •

07/03/2025

Heatmap Illustration/Getty Images

A member of the House Freedom Caucus said Wednesday that he voted to advance President Trump’s “big, beautiful bill” after receiving assurances that Trump would “deal” with the Inflation Reduction Act’s clean energy tax credits – raising the specter that Trump could try to go further than the megabill to stop usage of the credits.

Representative Ralph Norman, a Republican of North Carolina, said that while IRA tax credits were once a sticking point for him, after meeting with Trump “we had enough assurance that the president was going to deal with them in his own way,” he told Eric Garcia, the Washington bureau chief of The Independent. Norman specifically cited tax credits for wind and solar energy projects, which the Senate version would phase out more slowly than House Republicans had wanted.