Aviation Weather
- Displays live pilot reports, current and forecasted weather (PIREPs, METARs, TAFs), temporary flight restrictions (TFRs) with optional radar overlays using Google maps.
- http://maps.avnwx.com

BalloonCast
- Customized weather for balloon pilots. METARs, TAFs, winds aloft, sunrise/set for multiple stations compared side by side, all codes translated to English and times converted to local.
- http://www.blastvalve.com/weather/

Turbulence Forecast
- Turbulence forecast maps for around the world.
- http://www.turbulenceforecast.com

Pilot Weather Briefing
- Free weather information for pilots, including surface conditions, upper level winds, turbulence, icing, thunderstorms, TAFs and Metars, radar and satellite images.
- http://www.pilotweatherbriefing.com

Flying in Europe
- Weather information for flying in Europe, including all airport notams, calculations, country information, airport webcams, FBO database, and all aviation abbreviations.
- http://www.flyingineurope.be

WSI
- Provides pre-flight and in-flight weather information. Aviation weather also available online through WSI Pilotbrief.
- http://www.wsi.com/solutions/aviation/

SA Weather Service - Aviation
- Provides weather services for the aviation industry in Southern Africa. Includes metars, sigmet charts and forecasts.
- http://aviation.weathersa.co.za

Pilot's Guide to Aviation Weather Services
- An online brochure to help pilots use the "National Aviation Weather System."
- http://www.nws.noaa.gov/om/brochures/pilot.htm

Enflight
- Obtain plain-language weather briefings using exclusive WXpert translation. View up-to-date weather graphics. Helps prepare and file flight plans. Available both on the Web and on mobile PDAs (Palm i705, etc.)
- http://www.enflight.com/

Aviation Weather Center
- The National Weather Service's aviation weather site with official forecast products as well as experimental products.
- http://aviationweather.noaa.gov/

Winds and Temperatures Aloft
- By selecting one of over 160 continental cities in the U.S.A. or one of 30 cities in Alaska, you can obtain wind direction, speed, and temperature forecasts.
- http://www.usairnet.com/cgi-bin/Winds/Aloft.cgi

Ace's Pilot Shop Weather Data
- Aviation weather and flight planning, including forecasts, observations, weather maps, DUATS briefings, icing, and turbulence.
- http://www.acespilotshop.com/wx2.htm

Data Transformation Corp DUAT
- FAA's Direct User Access Terminal service provides free aviation weather and flight planning for certified pilots in the US.
- http://www.duat.com

Base Ops
- Aviation Weather for Flight Preparation with TAF Metar Sigmet Radar and Sat-pictures.
- http://www.baseops.de/

Northwest Airlines Meteorology
- Providing weather forecasting products for the aviation industry, including specialized turbulence and thunderstorm forecasts.
- http://www.nwa.com/weather

Upper Midwest Aviation Weather
- Central reference for aviation weather resources, focusing on current and forecast conditions in the upper midwest region of the US, including Minnesota, Wisconsin, South Dakota, North Dakota, and Iowa.
- http://weather.cloud7.org/