All 10 of the hottest years on record have been since 2015. Recent years have broken temperature records—2023 and 2024 were Earth's hottest on record, with global temperatures exceeding an average 1.5°C in 2024. It’s worth noting, however, that to warm beyond the 1.5°C limit of the Paris Climate Accord, this level would need to be exceeded not for a single year but for an average over 20 years.That said, breaches of 1.5°C for a month or a year are early signs of getting perilously close to exceeding the long-term limit, according to the United Nations.