According to Rasmussen Daily Presidential Tracking Poll:

The Rasmussen Reports daily Presidential Tracking Poll for Thursday shows that 25% of the nation’s voters Strongly Approve of the way that Barack Obama is performing his role as President. Forty percent (40%) Strongly Disapprove giving Obama a Presidential Approval Index rating of -15. Just 29% say the U.S. is generally heading in the right direction.

Overall, 45% of voters say they at least somewhat approve of the President’s performance. Fifty-four percent (54%) disapprove.

UPDATE:

According to DrudgeReport, The Rasmussen Tracking Poll shows Obama’s approval rating dropping to 44% today (Feb. 26).