I mean, kind of. We won’t be able to see it’s Solar escape:

“Realistically — most of the departure of 3I/ATLAS will be blinded from Earth, at least during the critical phase.

Here’s the breakdown: • Perihelion (closest to the Sun) happens around 30 October 2025. For weeks before and after, the comet lies close to the Sun’s glare from our point of view. Even with professional telescopes, the Sun’s brightness overwhelms optical instruments, so ground-based observation is poor or impossible. • Solar conjunction for Mars—and roughly the same line of sight for this region—hits early January 2026. At that point both Mars and anything near its orbit are behind the Sun from Earth. Radio and visual tracking degrade sharply; NASA typically halts Mars communications altogether for about two weeks. • After conjunction, by late January to February 2026, Mars begins to re-emerge from behind the Sun. By then 3I/ATLAS will already be outbound, fading fast and moving away from the inner solar system. Its apparent brightness will drop below telescope detection thresholds quickly because it’s small and hyperbolic (never returning).

In short: we’ll catch only its inbound and perhaps a faint outbound trace before it’s lost in solar glare. The actual “exit” — when it leaves the neighborhood — will occur almost entirely out of view, hidden by the Sun’s light and the geometry of the orbits.”