The Weather Channel
ADDS weather (METARS & TAFS)
Accuweather (current flight delays and forecasted flight delay maps)
MobileMetar.com (METAR & TAF History on one screen, decoding available - works well on cell phone)
WeatherUnderground.com (METAR, TAF's, Decoding, Radar, "Rapid Fire" updates, Historical data & graphs)
m.wund.com (Mobile Edition - Weather underground, recognizes airport codes in search)
ALPA's Guide to Flight Time Limitation and Rest Requirements (ALPA Members Only)
1) Go to alpa.org and click Members Only to log in
2) Select "Committees" from the top menuand click "Flight Time/Duty Time"
3) Click "Guide to FTDT Limitations"
4) You can download ALPA's Guide to Flight Time Limitations and Rest Requirements in Standard and Jeppesen formats
FAA Airport Delay
FAA EDCT Lookup
USA Today (USA Today - "Today in the Sky")