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@Key6 but the main point, that the writer put in good words, is: it depends on the country, more than this, the city! And I completely agree with him/her. Australia, South America, Europe, Russia, US,....no worldwide well known app/service cover well all of these places. Always a more local service uses to be better.
Key6 I quit, sorry!
Weather Timeline 100%. Free would be either Today Weather or Dark Sky. I don't think anything will beat any of those 3 anytime soon.