How much is a troy ounce of silver today?

It's not possible to give a specific answer because the price of silver changes every day.

When tomorrow or next week becomes "today" any specific price posted here will be completely out of date. While it's not normal WikiAnswers policy to say "use the internet", that's the best approach in this case. You can check a site such as kitco.com, CNNMoney, etc. for the latest values.