A mostly sunny day with some very thin high clouds, and an occasional lower altitude cloud drifting in. (builditsolar.com)
This is also why global warming alarmists try to do their best to quench anything related to the the solar variability → cosmic ray flux → atmospheric ionization → low altitude cloud cover link which by now has ample evidence for support, both empirical and experimental. (sciencebits.com)
Later, Henrik Svensmark and his colleague Nigel Marsh, have shown that the correlation is primarily with low altitude cloud cover. (sciencebits.com)