Gallup just announced that the President's job approval has slipped to 58%, an all time low for him in Gallup's daily tracking poll. Obama's approval rating has averaged at 63% since he took office, peaking at 69% early in his presidency. He's only dipped below 60% on three other occasions this year. The drop seems to be attributable to respondents identifying as Republican or Independent. Around 92% of Democrats approve of how Obama is doing the job.
Although this latest number is slightly lower than Obama's average, it is still high by historical standards.