| version | 
                        
                           | 
                            string | 
                            Required | 
                            Version control: 1.5 | 
                    
                  
                        | location | 
                        
                             | 
                            string | 
                            Required | 
                            4 character METAR observation station id (EG: KNYC) or  latitude longitude point (EG: 40.7829N+73.9654W).  For map of actively monitored weather observing stations to use click here | 
                    
  
                        | date | 
                        
                             | 
                            string | 
                            Required | 
                            Start date range (YYYY-MM-DDTHH:MM:SS) | 
                    
  
                        | enddate | 
                        
                             | 
                            string | 
                            Required | 
                            End date range (YYYY-MM-DDTHH:MM:SS) | 
                    
   
                        | units | 
                        
                             | 
                            string | 
                            Required | 
                            Imperial / U.S. standard or metric units ("e" imperial or "m" metric) | 
                    
                       
                             | weather | 
                        
                             | 
                            string | 
                            Optional | 
                            Weather conditions  ("1" yes, return) ("0" no, do not return, default) | 
                       
                       
                             | temp | 
                        
                             | 
                            string | 
                            Optional | 
                            Ambient surface temperature ("1" yes, return) ("0" no, do not return, default)) | 
                       
                       
                             | rh | 
                        
                             | 
                            string | 
                            Optional | 
                            Relative humidity ("1" yes, return) ("0" no, do not return, default) | 
                       
                        
                             | wind_dir | 
                        
                           | 
                            string | 
                            Optional | 
                            Wind direction (north, south, east, west, ... ) ("1" yes, return) ("0" no, do not return, default) | 
                       
                        
                             | wind_deg | 
                        
                           | 
                            string | 
                            Optional | 
                            Wind direction in degrees ("1" yes, return) ("0" no, do not return, default) | 
                       
                        
                             | wind | 
                        
                           | 
                            string | 
                            Optional | 
                            Wind speed ("1" yes, return) ("0" no, do not return, default)  | 
                       
                        
                             | wind_gust | 
                        
                           | 
                            string | 
                            Optional | 
                            Wind gust ("1" yes, return) ("0" no, do not return, default) | 
                       
                         
                             | press | 
                        
                           | 
                            string | 
                            Optional | 
                            Atmospheric pressure ("1" yes, return) ("0" no, do not return, default))  | 
                       
                         
                             | dewpt | 
                        
                           | 
                            string | 
                            Optional | 
                            Dew point ("1" yes, return) ("0" no, do not return, default) | 
                       
                         
                             | hi | 
                        
                           | 
                            string | 
                            Optional | 
                            Heat index ("1" yes, return) ("0" no, do not return, default) | 
                       
                         
                             | wc | 
                        
                           | 
                            string | 
                            Optional | 
                            Wind chill ("1" yes, return) ("0" no, do not return, default) | 
                       
                         
                             | vis | 
                        
                           | 
                            string | 
                            Optional | 
                            Visibility ("1" yes, return) ("0" no, do not return, default) | 
                       
                           
                             | precip | 
                        
                           | 
                            string | 
                            Optional | 
                            Precipitation ("1" yes, return) ("0" no, do not return, default) |