New dataset available through the meteoblue Dataset API: SARAH-2
The SARAH-2 dataset is available from August 2018 to current, updates daily, and has a resolution of 0.05°. The available variables are Shortwave Radiation, Clearsky Shortwave Radiation, DNI, Direct Shortwave Radiation and GTI.
SARAH-2 currently is the best available estimation of shortwave radiation!
Further information about the SARAH-2 dataset is available here.