Why is there a lot of water collecting in the floorboard of my Camry when I turn on the air conditioning on a humid day? If this is just condensation, shouldn't it drain outside the car?

This is a common problem with a lot of cars the last couple of years. The water should be draining on the ground. Chances are there is a clog in the drain line from the air conditioner. You may have to get a mechanic to clear it unless you can find some information on where the line is and clean it out yourself. Get it fixed ASAP. You have water in your AC ducts which will eventually burn out your blower motor.

There is a rubber hose that runs from inside the car to the outside. This hose is normally located by the feet of the passenger. (normally you would notice a puddle of water under a car on the pasenger side after it’s been parked) You could look to see if you notice a hose that is loose and knocked off a small plastic nipple by the passengers feet. You might be able to simply push it back on. Or, it might be clogged with mud on the outside (under the car, by the firewall on the passenger side). You might be able to unclog it. Either way “jrgould” is correct. Do not ignore it. Good luck!