Forex dealers said besides dollar's gains against euro in the overseas markets, a weak opening in the stock market also put pressure on the domestic currency.
The rupee had closed 37 paise higher at 52.68 yesterday on the back of capital inflows worth USD 200 million, amid Finance Minister P Chidambaram playing down any serious threat of a rating downgrade by S&P.
Meanwhile, the BSE benchmark Sensex fell by 65.90 points, or 0.35 per cent, to 18,738.85 in early trade today.
