If you fly a lot around the US then you’ll find Doc Searls toolkit useful:
The more I fly, the more useful, or at least interesting, the NOAA’s AviationWeather.gov service becomes. At any given moment it has dozens of different reports on weather at altitude, across North America. The one above is among the many that show potential or reported turbulence.
Here’s the FAA’s page on flight delays. Plus FlightAware, the best of a bad bunch — too much flash and other stuff that doesn’t work on too many browsers, especially ones in handhelds. Speaking of which, I’ve lately been appreciating FlightTrack. The list could go on, but I need to move on. See ya in Boston. (At IAD now. The last two paragraphs were written at SFO, where connectivity was minimal.)
Oh, click on the map above and check out the current maximum turbulence potential between here (Washington) and Boston. So far there’s just one pilot report, of moderate turbulence, over Connecticut.