I am in California. There is a outside cat that had some kittens today. The cat is inside this little scratching cube thing and I don't know how many kittens are in there but I can see at least one tiny furry ball which is one kitten.
I cannot bring the cat inside the house as I already have an indoor cat and 2 small dogs. So I don't know what to do. How long does the mother cat usually feed their kittens? I have a bowl of water and food out there but where we live they don't recommend leaving food outside at night so I bring the food in but leave the water bowl out there. I am just worried about the kittens because they will be exposed to the elements (very hot weather here right now)

Also there is a Tom cat around here too (doesn't belong to anyone and just always around here) So I am afraid that tom cat will get to the female cat again. I cannot get near the Tom cat to take to a shelter or somewhere because it is not friendly and won't even let you get close to pet it.
I am just worried about the female cat and her baby or babies.
They were born today, August 18, 2015 (outside) near my front door of the house.
I don't know anyone nearby to help me so I just don't know what to do. I am just afraid for the kittens to be outside exposed to the heat of the day and just outside dangers.
How long does kittens have to be fed by their mother before they can eat kitten food?