The picture below shows the annual average temperature for Eskdalemuir in Scotland. Each vertical stripe represents one year from 1914 on the left to 2025 on the right. Blue stripes are relatively cold years and reds are the hot ones. Notice that it’s mostly blue before 2000 and mostly red after that. Nine of the ten hottest years ever recorded at Eskdalemuir were in the years since 2000.
The same pattern recurs for almost every weather station on Earth. With the exception of a narrow strip along part of the Antarctic coast, every long-term record on the planet shows significant warming in the last few decades. You can see this for yourself by using show your stripes to look at the temperature for hundreds of places across the World going back, in many cases, centuries.
If practically every weather station on Earth shows warming, it’s hard to argue that climate change is not happening.