How does the iphone6 drop-down menu display the weather forecast?

The drop-down menu of iphone6 shows the weather forecast. The specific operation is as follows:

1. Open the settings of iphone6, and then select Privacy;

2. Click "Location Service" and find the "Weather" option inside;

3. Turn on the weather and select the Always button;

4. Go back to the settings page of iphone6 and pull out the notification center from the drop-down menu;

5. Then click Edit at the bottom of the notification center, and you will find a red mark in front of the option to add today's summary to the notification center;

6. In this way, we can see today's weather smoothly.