Virus Warning on Weather Apps

Just downloaded different weather app because my WeatherBug App kept stating I have a Virus, CLEAN NOW!

I downloaded another weather app, NOW DIFFERENT WARNING LOOK, same type of warning

So why am I getting antivirus warnings, that I should clean my phone on iPhone 15+ on several weather apps. I even Rebooted once, a week later (today) came up again, rebooted again‼️ What to do next time. So far so good🤬😵‍💫