Explosion dreams are distinct from other destruction imagery (fire, earthquakes) in one key way: the change is instantaneous and total, not gradual — which usually points to a situation you expect to end abruptly rather than wind down.
Witnessing an explosion from a distance
This version often reflects awareness of a volatile situation — a relationship, workplace, or plan — that you sense could end suddenly and completely, even if things currently seem calm on the surface.
Being caught in an explosion
A more acute version, this can reflect a recent moment when a situation genuinely did rupture suddenly — the emotional aftermath still being processed, even if the practical fallout has settled.
Causing an explosion yourself
Worth examining honestly — this can reflect either fear of your own capacity to cause sudden, total disruption (in anger or otherwise), or an unacknowledged wish to blow up a situation you feel stuck in.