He could also likely sense Maul in the Force and feel the dark side swarming around him; he did, after all, have reason to turn around and warn Anakin despite being turned away from the approaching Maul at the time.
Also, it seems humans kind of suck compared to other races; Anakin is the only human who can podrace, which makes Qui Gon comment that he must have Jedi reflexes. Which, taken to the logical conclusion, means Jedi reflexes put humans on the same level as various alien species.