All City meters have a three-hour maximum daily parking limit from 9 a.m. to 6 p.m. at a rate of $1.50 per hour.
Metered parking is free outside those hours, except between the hours of 3 a.m. to 6 a.m., where parking is prohibited.
Tokens, quarters, loonies and toonies are accepted at City meters and dispenser lots.
Source: http://www.stcatharines.ca/en/livein/ParkingLotsGarages.asp