Lethal Humidity Global Council

In 2023, the Intergovernmental Panel on Climate Change (IPCC) confirmed that one of the greatest hazards posed by near-term 1.5C degree warming is the impact of "dangerous" humid heatwaves on human mortality. This means that of all the dangerous impacts of the climate crisis, humid heatwaves is one of the nearest dangers we face according to makjor scientific consensus. According the The National Aeronautics and Space Administration (NASA), for every degree the planet warms, humidity rises by about 7 per cent, because warmer air holds more water vapour. On this basis, it is likely that humidity has risen roughly 10% since the 1850's. Increasing temperatures combines with high humidity can be lethal for humans. As our oceans warm from rising temperatures, more water evaporates, further increasing humidity in the air. This drives energy in o the atmosphere and stirs up violent and frequent weather events like storms and hurricanes. We are all at extreme risk from the combined threat of lethal humidity and heat.