FMI IWXXM SWIM API Operational Policy

METAR, TAF and SIGMET in IWXXM – Terms of Use

Access to and use of the content of this service means that you, as a service consumer, have accepted the following terms and conditions for FMI METAR/TAF/SIGMET Subscription and Request Service:

• Use of FMI METAR/TAF/SIGMET Subscription and Request Service is limited to service consumers within the aviation domain only.

• Service consumers within the aviation domain shall not pass the information obtained from FMI METAR/TAF/SIGMET Subscription and Request to non-aviation users without prior authorisation from FMI.

• Do not overload FMI METAR/TAF/SIGMET Subscription and Request Service as this may result in reduced availability for all service consumers.

• Service consumers are responsible for ensuring that information retrieved from FMI METAR/TAF/SIGMET Subscription and Request Service is:

  • up to date

  • used as intended within the aviation domain

• Service consumers are responsible for keeping themselves regularly updated on published information. FMI, as a certified MET service provider, has made every reasonable effort to ensure that the information and all data presented in the FMI METAR/TAF/SIGMET Subscription and Request Service is, to the extent possible:

  • precise

  • complete

  • current

  • of adequate integrity

  • unambiguous in order to meet the needs of airspace users.

• FMI reserves the right to have service windows for maintenance.

• FMI reserves the right to block individual IP addresses or completely block service consumers in cases of obvious abuse to the terms of use.

Finnish Meteorological Institute FMI +358 29 539 1000 Finland

18.12.2025