Salesforce XML

Have salesforce query [login to view URL] at a set variable time (8:45 or 9:00 or 10:00, etc.) return 11 different fields: KDCA 131752Z 06006KT 10SM OVC018 18/15 A3033 RMK AO2 SLP270 T01830150 10189 20161 58015 KDCA 2017-10-13T17:52:00Z 18.3 15.0 60 6 10.0 30.33071 1027.0 The fields in Salesforce will be the same of the ones above, visibility_statute_mi, sea_level_pressure_mb, etc. On the last one, I only need the sky_condition sky_cover="OVC" I want this to happen inside of salesforce, the salesforce page being populated is not visible to the web.