Weather & Meteorology
A few examples of what you can ask Wolfram|Alpha about:
Current Weather
get a current local weather report
get current weather for a specified location
get specific weather data
compare weather in several locations
Weather History
get local weather history
get historical weather information for a specified location
compare weather histories
Weather Forecasts
get a local weather forecast
get an extended forecast
get a weather forecast for a specified location
Sunburn & UV Index
get the local UV forecast
compute how long it’s safe to be in the sun
compute exposure time for frostbite
get information about a tropical storm
specify the year of a tropical storm
compare tropical storms
get information about US tornadoes in a specified location
get information about US tornadoes meeting specified criteria
get information about a type of cloud
compute cloud base height
analyze global climate data
analyze the climate for a specific location
analyze a specified climate index