Aviation weather and flight planning, including forecasts, observations, weather maps, DUATS briefings, icing, and turbulence.

An aviation weather graphics site including icing, turbulence, and convection. Also includes a 'Flight Path Tool' for pilots.

Displays live pilot reports, current and forecasted weather (PIREPs, METARs, TAFs), temporary flight restrictions (TFRs) with optional radar overlays using Google maps.

The National Weather Service's aviation weather site with official forecast products as well as experimental products.

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.

Aviation Weather for Flight Preparation with TAF Metar Sigmet Radar and Sat-pictures.

FAA's Direct User Access Terminal service provides free aviation weather and flight planning for certified pilots in the US.

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.)

Weather information for flying in Europe, including all airport notams, calculations, country information, airport webcams, FBO database, and all aviation abbreviations.

Providing weather forecasting products for the aviation industry, including specialized turbulence and thunderstorm forecasts.

Free weather information for pilots, including surface conditions, upper level winds, turbulence, icing, thunderstorms, TAFs and Metars, radar and satellite images.

An online brochure to help pilots use the 'National Aviation Weather System.'

Provides weather services for the aviation industry in Southern Africa. Includes metars, sigmet charts and forecasts.

Turbulence forecast maps for around the world.

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.

Provides pre-flight and in-flight weather information. Aviation weather also available online through WSI Pilotbrief.