I walked for a few days through a zone of forest fires in the South of France on my 2005 Camino -- worrisome in particular because in a couple of locations the only accommodation available was my sleeping bag and the outdoors. And being alone like that, there was no organised network of other pilgrims to rely on for information.
But I found that in general, paying close attention to wind direction in relation to the blazes, careful and frequent consultation of your map, and keeping as much as possible onto the tarmac and in the valleys and away from the wooded areas kept you out of trouble -- some pilgrims might want to consider following these tactics in the affected areas rather than following the yellow arrows, which have not been put down in relation to the current situation.
Buen Camino to all of you out there these days, keep sensible and keep out of the way of these fires !!!