Use a two-strap dust particulate mask with nose clip and coveralls for the best minimal protection. Check with local authorities for hazardous disposal assistance. Make plans to care for your pets in case you must evacuate. Visually check the stability of the trees. Any tree that has been weakened by fire may be a hazard.
Winds are normally responsible for toppling weakened trees.
The wind patterns in your area may have changed as a result of the loss of adjacent tree cover. Look for burns on the tree trunk. If the bark on the trunk has been burned off or scorched by very high temperatures completely around the circumference, the tree will not survive. Where fire has burnt deep into the trunk, the tree should be considered unstable. Look for burnt roots by probing the ground with a rod around the base of the tree and several feet away from the base.