When comparing Weather Underground vs WeatherPro, the Slant community recommends Weather Underground for most people. In the question“What are the best weather apps for Android?” Weather Underground is ranked 3rd while WeatherPro is ranked 4th. The most important reason people chose Weather Underground is:
Weather Underground is packed with useful information and its charts are some of the best. Access to temperature, precipitation, and wind changes all on one chart make it easy to make predictions on when the storm will hit or the best times to be outside.
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Pros

Pro Detailed hourly and daily weather charts
Weather Underground is packed with useful information and its charts are some of the best. Access to temperature, precipitation, and wind changes all on one chart make it easy to make predictions on when the storm will hit or the best times to be outside.
Pro Partially crowd sourced data
One of Weather Underground's biggest differentiating factors is the option to contribute to the weather forecast. Weather Underground offers both "sky reports" and "hazard reports" as methods for crowd reporting. Sky report allows users to report on the accuracy on the current weather forecast in their current location with either a check for correct or x for incorrect. This addition can help improve the accuracy of the weather forecasts with real eyes in the skys to check their accuracy. Hazard report allows users to report flooding, power outages, road debris, high surf, slippery roads, white out, and roads unplowed to warn other users in the area.
Pro Can register your own weather stations to work with it
Wunderground supports crowdfunded weather data so you can setup and read the weather from your house.
Pro Banner advertisements are minimal
Like most other weather applications, Weather Underground includes banner advertisements but in this application they don't feel as intrusive. Weather Underground included them at the top of the screen, out of the way of accidental touches, and they are smaller than the normal banner advertisement. If you decide to remove the advertisements, it is $1.99 a year.
Pro Allows comparison to previous days' temperatures
Pro Variety of map options
Weather Underground offers a very large selection of map options including: radar, temperature, precipitation, crowd reports, IR sat., wind, US fronts, visible sat., regional temp, severe weather, hurricane, active fires, fire risk, and storm tracks. Weather Underground also provides the weather station name and location if you touch each balloon of information on the map. The amount of options can be overwhelming but it is a useful tool if your interested in using it.

Pro Radar Map Widget
Pro Accurate around the world
The accuracy of the prediction is second to none IMO.
Pro Details weather info
Rain probability and estimated quantity by hour, amount of sunshine, temperature felt, etc. Even the radar map for premium subscriptions.
Pro Various alerts
Alerts for thunderstorm, strong heat, strong wind, etc.
Pro Beautiful notification widget
In addition to offering customizable data points, the persistent notification is very colorful and elegant, always standing out from normal notifications.
Cons
Con Buggy
Sometimes the graphs don't show up, the website's location search is broken, etc.
Con No push notifications for weather alerts
Weather Underground offers absolutely no push notifications; that means that even if there is a tornado in your area Weather Underground will not alert you until you open the app. Weather Underground only offers optional ongoing status bar notification for temperature and conditions.
Con Somewhat overwhelming design
Weather Underground pushes an overwhelming amount of information at the user at first glance. Sometimes it is difficult to find exactly what you want on the go. Other applications such as Yahoo Weather are much easier to read. But the advantage to this is the wealth of raw information available.

Con No Android Wear support
Con Cluttered UI
There's very little finesse present in the layout of the data, everything is just stuffed into unsightly boxes as tightly as possible. This minimizes scrolling but makes it difficult to parse at a glance.
