It's simply being able to swipe up/down/left/right on the radar to scan the different factors of weather coming it, especially when I'm going to work.
I work outside all day long but also travel to work on an escooter too so knowing if it's gonna be windy/pissing it down or, sunny (UK here, this is rare) factors in how I arrive by foot/scoot and what I need to wear that day.
I like windy.com but they started premium blocking content recently. Still good though, if you want to see the current weather such as radar and windspeed.