kWx

App for iPhone that talks directly to the weather.gov and forecast.weather.gov sites to get current conditions and forecast. Every tower-controlled airport will have a weather station associated with it and is designated by "K" followed by the three-letter designator for the airport. Thus KORD is the weather station assocated with O'Hare airport in Chicago. When you go to http://weather.gov and enter in a city, state weather.gov uses a third-party site to convert that into a latitude and longitude that it uses to decide what weather to report. By designating an airport you skip that third-party step. https://w1.weather.gov/xml/current_obs/ has a list of all the weather stations for each state so if you aren't sure about an airport near your location you can look for one using that site. For some reason Alaskan weather stations begin with a "PA" and Hawaii stations begin with "PH". Maybe because they were late becoming states?.