The World Meteorological Organization (WMO) has announced that 2023 is likely to be the hottest year on record, with global temperatures reaching 1.4 degrees Celsius (2.5 Fahrenheit) above preindustrial levels. This is just one-tenth of a degree under the Paris climate accord's target limit for the end of the century. The WMO report warns of increasing floods, wildfires, glacier melt, and heat waves, and the onset of El Nino could tip the average temperature next year over the 1.5-degree (2.7 degrees Fahrenheit) threshold. World leaders must take immediate action to reduce emissions and mitigate the effects of climate change to meet the Paris climate accord's goal of limiting global warming to 1.5 degrees Celsius (2.7 degrees Fahrenheit).