Magnetic Fields
WWV K Index
Solar Wind Speed
Solar Wind Density
Solar Wind Teperature
Protons and Electrons
HE-Protons
X-Ray
Data liberally provided by http://www.sec.noaa.gov

Links:
- A short overview about solar and geophysical activity and 24h-forecast (Daily updated around 22:00 GMT)
- Solar Terrestrial Activity Report by dxlc with review and forecast (Daily updated around 04:00 GMT)
- Aurora Forecast (German)