Up until 2015 Weather Underground was the top weather website, had huge amounts of information density, easy to navigate... fast
I'm not sure what the current incarnation of Weather Underground is, but it is nothing like it's former self. Wunderground was sold off to... IBM? and then later... The Weather Channel? At some point the "classic" website was finally turned off for good. It was a sad day.
Ever since ~2015 there hasn't been a good, "go to" weather website. Dark Sky came out not long after wunderground classic, and it looks like recently Apple bought them. Dark Sky is no Wunderground Classic, but it's a good attempt.