It happened around 7:30 a.m. in the 6100 block of Ridgeway Drive.
Houston police responded to an initial report of a person down in the area, but found that the woman had severe burns on her body, authorities said.
The woman had run to a neighbor's house for help after her boyfriend set her on fire, HPD said. It began with an argument between the victim and her boyfriend when he grabbed a water bottle that had gasoline in it and poured it on her and lit her on fire, Houston police said.
The woman was severely burned on her chest, shoulder, neck and thigh.
The woman was taken to Memorial Hermann Hospital where she was stable.
The man accused of burning the woman, identified as Harold Celestine, took off before officers arrived. Celestine is now wanted on aggravated assault, criminal mischief, and assault charges.