In order to access the API, you need to sign up for an API key at https://openweathermap.org/.
For optional parameters (...) in functions see https://openweathermap.org/api/

Examples

# NOT RUN {
   # first of all you have to set up your api key
   owmr_settings("your_api_key")

   # or store it in an environment variable called OWM_API_KEY (recommended)
   Sys.setenv(OWM_API_KEY = "your_api_key") # if not set globally

   # get current weather data for "Kassel" with temperatures in °C
   get_current("Kassel", units = "metric")

   # get 3h forcast data (7 rows)
   get_forecast("London", cnt = 7)

   # ...
# }