In the US services industry, activity eased in April from a record level in March, likely due to shortages of inputs amid a burst of demand, data from the Institute for Supply Management showed.
The dollar index, which measures the greenback against a basket of peer currencies, was last at 91.262 after rising as high as 91.436 earlier in the session, its highest since April 19.
The dollar index stood at 91.866, having risen for the last three sessions, drawing support mainly from elevated US bond yields on the back of expectations of a strong economic recovery.
In the cryptocurrency market, ethereum spot prices fell 1.21% to $1,595 after the listing of ethereum futures on the Chicago Mercantile Exchange on Sunday.