The antonyms for "am within view" would be "am out of sight" or "am hidden." These antonyms suggest that something is not visible or easily accessed. "Am out of sight" could indicate that something is far away or obstructed, while "am hidden" might suggest intentional concealment. These antonyms could be used in a variety of contexts, such as if someone is searching for a lost object or if a person is trying to evade detection. Ultimately, the opposite of being within view is being outside of it, and there are many words that can capture the nuances of these different states.