Yes, according to Pokémon GO's coding (first discovered by the Redditor __isitin__), Incense'll spawn one Pokémon every five minutes, if the player is not moving around. Except, the spawn rate surges to once a minute if a player travels at least 200 meters between spawns---about 7.5 MPH.
Based off Pokémon GO's frustratingly glitchy tracking system, and players actually taking pit stops to catch the Pokémon they find---you'd probably be able to catch between 10-15 Pokémon while your incense is active.Like what you see? Follow Us and Add Us as a Preferred Source on Google.