openweathermap is a service that provides weather data, including current weather data, forecasts, and historical data to the developers of web services and mobile applications.
It provides an API with JSON, XML and HTML endpoints and a limited free usage tier. Making more than 60 calls per minute requires a paid subscription starting at USD 40 per month. Access to historical data requires a subscription starting at 150 USD per month. Users can request current weather information, extended forecasts and graphical maps (showing cloud cover, wind speed, pressure and precipitation).
To use this current weather data API, one must need the API key, which can be get form here.
Note: User need to create an account on openweathermap.org then only can use the APIs.
Modules Needed :
Below is the implementation :
Enter city name : Delhi Temperature (in kelvin unit) = 312.15 atmospheric pressure (in hPa unit) = 996 humidity (in percentage) = 40 description = haze