Police say 42-year-old Issac Tamez was smoking meth while babysitting the child last month at a home on Grand Avenue new Newcomb Street.
The child suffered an overdose from exposure to the smoke and was rushed to the hospital.
Police say it took several days for the 5-month-old to recover.
Tamaz was arrested on Friday and booked on numerous charges, including child endangerment.
He's being held on a $110,000 bond.