The volcano erupted again in 1631, six times in the 18th century (including 1779 and 1794), eight times in the 19th century (notably in 1872), and in 1906, 1929 and 1944. There have been no eruptions since 1944, and none of the eruptions after AD 79 were as large or destructive as the Pompeian one.

Mount Vesuvius does not erupt on a fixed schedule, but historically it has followed cycles of intense activity followed by long periods of "quiescence" (rest). Since the famous destruction of Pompeii in 79 AD, the volcano has erupted about three dozen times. It entered a particularly active phase from 1631 until its most recent eruption in 1944. Since 1944, Vesuvius has been in a "quiescent" state, which is currently the longest period of rest in nearly 500 years. Volcanologists in 2026 monitor the mountain 24/7 because they know that the longer the "cork" stays in, the more pressure builds in the magma chamber. While it hasn't erupted in over 80 years, it remains one of the world's most dangerous volcanoes due to the 3 million people living in its immediate shadow. Statistically, it is "overdue" for a new eruptive cycle, but currently, there are no seismic signs of an imminent "Plinian" (massive explosive) event.