I am an international Baccalaureate student as well as well accomplished athlete in two sports however I'm worried that these two things won't be enough to get me into the UC that I wanted (UCI). I was sick in the first semester of my junior year and ended up missing a lot of school to get a 3.5 w gpa which lowered my overall w GPA of a 4.25 to a 4.0 the rest of my semesters are very good and generally show an upward trend. I'd hate to see one semester ruin my chances and I know I asked a question similar to this but I just wanted to get more answers on how typical admissions offices are going to look at my grades.
There is an additional information section on the UC application to explain any circumstances relating to your grades. I would suggest utilizing that section (I believe it is underneath the personal insight bar). Also, know that your UC GPA only includes the summer before the sophomore year to the summer after junior year (here is a link to the UC GPA calculator: https://rogerhub.com/gpa-calculator-uc/).
I hope this helps and if you have any questions don't hesitate to ask!