A warmer world makes for a more combustable world. Over the last 50 years or so, the world has been experiencing more and more wildfires. Wildfires are typically either started accidentally by humans – e.g. cigarettes that are being tossed out the window – or by natural causes like lightning.
These ignition events don’t have a major effect on the scale of the fire, but what does affect scale are prevailing climate conditions. And these have become warmer and drier across the globe. The global temperature is increasing and the climate to change. This enhances the likelihood of wildfires.