The following links are sources for obtaining solar and propagation information. Links will open in a new browser window.
Solar conditions
https://rigreference.com/solar
https://www.solarham.com/news_current_month.htm
https://www.arrl.org/here-comes-the-sun
https://3fs.net.au/making-sense-of-solar-indices/
Radio Communication Predictions and MUF
https://www.swpc.noaa.gov/communities/radio-communications
Maximum usable frequency (MUF) what it means
https://en.wikipedia.org/wiki/Maximum_usable_frequency