At the Interbank Foreign Exchange (Forex) market, the local currency opened sharply lower at 65 a dollar from its previous close of 64.30 and breached 65 level to trade at 65.34, not far from its all-time low of 65.56 reached last week.
Forex dealers said besides heavy month-end demand for the US currency from importers and persistent capital outflows, dollar's strength against other currencies overseas weighed on the domestic currency.
Meanwhile, the BSE Sensex dropped 221.29 points, or 1.19 per cent, to 18,336.84 in early trade today.