The president enjoyed a 58-percent rating during the week of Oct. 21, in which he signaled a new push on immigration reform and blamed House Republicans for failing to act on the comprehensive immigration bill passed by the Senate in June.
But Obama's approval rating fell to 49 percent in the following week.
Obama came under fire the past week due to a wave of private insurance cancellations and technical problems with the Obamacare website.
That marks the lowest approval rating for Obama among Hispanics in the Gallup weekly approval rating poll since the week of Dec. 26, 2011, to Jan. 1, 2012, when he earned a 46-percent favorable rating.
His approval rating soared to the high seventies in the spring of 2013 as the Senate worked to pass a comprehensive immigration bill.