Can I watch the weather when I connect iphone to aerlink? What app do you need?

If you are an Apple phone, go directly to the App Store and search for "weather forecast". One of the top five is Minesage's.

If you set up a city, you can watch the weather for several days in a row. If your city has an early warning or the weather changes suddenly, you will be notified as soon as possible.

And the interface is relatively simple and easy to understand.