Geomagnetic data and data products
Follow the links to the resources you need!

World Magnetic Model (WMM), International Geomagnetic Reference Field (IRGF-13), Geomagnetic coordinate calculator and British Grid Magnetic Angle Calculator.

Solar and Geomagnetic Data and Indices
Indices: Kp , ap , Cp and C9 .
Data: Bartels rotation, International Sunspot Number, F10.7 flux.

Geomagnetic and Solar Activity Forecasts
Forecasts of local activity (UK observatories), Ap index and F10.7 flux.

List of Magnetic Observatories
List of all magnetic observatories (maintained on behalf of IAGA Division V OBS).