How does watch gt display the weather in real time on iphone?

Open the weather app weather icon on Apple Watch, and then tap a city. Click the hourly weather screen repeatedly to switch between hourly rainfall or hourly temperature forecast. Scroll down to browse the weather forecast in 10 days.

Add a city: Open the weather app on iPhone, tap+at the bottom of the city list, and then select a city. The weather application on Apple Watch displays the same cities in the same order that you added to the weather application on iPhone.

Select the default city: open the Apple Watch app on iPhone, tap my watch, and then go to weather > default city. If weather is added to the dial, the weather conditions of the city will be displayed in the weather shortcut view and dial.