Please keep in mind that this post is based off of a beta version of iOS 5. Apple can (and often does) change the behavior of features before the latest OS hits consumers hands. If anything drastically changes in regards to this feature in iOS 5, we will be sure to update the post.
When Apple announced a new Notification Center with iOS 5, it also revealed that iOS 5 would come with a couple of widgets: weather and stocks. The widgets are active in the Notification Center, the same place you will find the rest of your app alerts on iOS 5.
Some users may not want one or both of the widgets displayed on their iPhone or iPod Touch (as of iOS 5 beta 1, the iPad does not have widget support). This simple guide will show you where to find the toggle switch to turn the widgets off.
First you will need to go into the Settings app on your iPhone. Then find Notifications near the top, and tap on it.
Here you will find a list of the apps installed on your iPhone that use some sort of alert or notification. Scroll through and find either the stock widget and/or weather widget in the list. Tap on whichever one you would like to turn off.
Tap on the switch to turn the widget off; once done, the switch will read Off. Press the back arrow titled Notifications when you are done.
If you scroll to the bottom of the list, you will see that both of the widgets are now in their own section, aptly titled "Not in Notification Center." This is where you would go to turn either of the widgets back on, if you change your mind down the road.
As you can see, this clears up a lot of room in Notification Center, and can make for a better overall experience with the new alert system. Now, you just need someone, or something, to send you some alerts to take up all that blank space.