What is this noise from..

[Jenn]

Its coming from the front end somewhere when you go up hills and/or press the throttle down it goes sqweeeeeeeeek or schreachhhhhhh it sounds bad and is getting worse? any clues was just a little sqweek but now its way longer,, could the wet weather have anything to do with this? sounded like my chihuahua was stuck in the engine, like a small high pitched "yipe"..