This is part of a series of questions on the predictions from the last Global Annual to Decadal Climate Update from the World Meteorological Organization.
The chance of global near-surface temperature exceeding 1.5°C above preindustrial levels for at least one year between 2023 and 2027 is more likely than not (66%). It is unlikely (32%) that the five-year mean will exceed this threshold.
I will base the resolution on data from the WMO, if available. Otherwise, I will base it on the most reliable measurements I can find.
Resolves YES, I think? https://wmo.int/news/media-centre/wmo-confirms-2024-warmest-year-record-about-155degc-above-pre-industrial-level
2023 was 1.45° above the preindustrial average:
https://wmo.int/publication-series/state-of-global-climate-2023
So if 2024 is hotter, it will likely pass the threshold.