The survey, made public late Sunday, shows that 39% of Americans approve of the president's job performance, while 54% disapprove.
Both figures are the worst numbers of his presidency, according to US media reports.
Obama's approval rating peaked at 53% in the weeks following the death of al Qaeda founder Osama bin Laden, who was killed by US special forces in Pakistan in May.
But it has been steadily declining in the wake of economic reports showing anemic growth and Standard & Poor's decision to downgrade the US credit rating.
The three-day tracking poll of approximately 1,500 adults was conducted by telephone between August 11-13. It had a margin of error of three percentage points.
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Lets see, campaign promises:
Out of Iraq, check
Out of Afganistan, check
Close Guantanmo, check
No earmarks, check
See through gubermint, check
Dump Patriot Act, check
Renegotiate NAFTA, check
No more bail outs, like AIG, check (chuckle)
End torture and secret prisons (forgettabout that Yemen secrecy), check
HOW IN THE WORLD DOES THIS GUY GET ELECTED AGAIN?
He reminds me a bit of Imran Khan - populist who promised things during the campaign that had broad appeal to people looking for change - but short on practical experience. He hasn't accomplished a single goal that he promised - has dashed the hopes of millions of American's - and dashed the hopes of the World in general.
He needs to come out with a major jobs program and let the Republicans and their right-wing friends turn it down. But he needs to act fast.
HOPE IT GOES DOWN TO 10%