I think you're talking about weather. The recent heat wave in the South and South/West is still less than it was in the entire decade of the 1930's, with 80% to 90% higher rates of anthropogenic greenhouse gases in the atmosphere now. The climate has changed dramatically over eons and what little change we've seen in modern times (although not in the last 8 to 10 years) doesn't seem to be a 'sky is falling' event.
The head of the UN's Intergovernmental Panel on Climate Change is even cautioning alarmists against saying such things.