Geomagnetic storms — Apr 20, 2016
Geomagnetic storms in London on Apr 20, 2016
the Earth's magnetosphere was quiet (Kp = 2.00)
Geomagnetic storms in the last 3 days
Changes in the geomagnetic index Kp from April 18 to 20, 2016 for mid latitudes
Location — London (geographic coordinates — 51.51 N -0.13 W | time zone UTC+00)

This chart in PNG format — high resolution
API data: JSON or TXT
Geomagnetic storms in London in April 2016
Changes in the maximum daily geomagnetic index Kp in April 2016 for mid latitudes
Location — London (geographic coordinates — 51.51 N -0.13 W | time zone UTC+00)

This chart in PNG format — high resolution
API data: JSON or TXT
Other activity indices
Index AP = 5
Index F10.7 = 83