There are floods, fires and heatwaves nearly every day. Scientists said July was the hottest month ever. July is usually the world's warmest month of the year. The scientists said July 2021 "is the hottest July and hottest month ever". Earth's temperature in July was 0.93 degree Celsius higher than the 20th-century average.

The scientists are worried. The U.N. made a 4,000-page report on climate change. It said humans have changed the climate. It said it is clear that human actions have warmed the atmosphere, ocean and land. Extreme weather will continue. Every region will see big changes in weather. There will be baking heat and floods.