Police are searching for a missing Canberra teenager who hasn't been seen since the weekend.

Hayley McNally, 15, was last seen at the Gungahlin bus and light rail interchange about 5.30pm on Saturday.
ACT police say it's believed Hayley was travelling into the city on the light rail.
She has been described as Caucasian, about 182 centimetres tall, having a medium build with a pale complexion, long dark brown hair and wearing glasses.
Hayley was last seen wearing a black top, a pink and black chequered skirt and black sneakers.
Hayley's family and police have said they hold concerns for Hayley's welfare and would like to assure her she isn't in any trouble.
Anyone who has seen Hayley or has information on her whereabouts has been urged to contact ACT police on 131 444.