If your unweighted GPA is 4.0 (including all high school and college courses), then your UC weighted capped GPA is probably around 4.2-4.3.
http://talk.qa.collegeconfidential.com/university-california-general/2127392-faq-uc-historical-frosh-admit-rates-by-hs-gpa-2018.html shows admission rates by GPA range for fall 2018:
Campus 4.20- 3.80- 3.40- 3.00-
higher 4.19 3.79 3.39
UCB 37% 10% 1% 1%
UCLA 41% 9% 2% 1%
UCSD 70% 34% 7% 1%
UCI 75% 38% 7% 1%
UCSB 80% 41% 8% 1%
UCD 89% 52% 14% 3%
UCSC 92% 70% 33% 12%
UCR 96% 84% 49% 15%
UCM 98% 95% 82% 45%
If you are applying for a major that is more popular than its capacity (e.g. CS or engineering majors at many campuses), then you should expect admission to be more difficult than past admission rates suggest for the overall campus.
If you are a pre-med who is willing to practice in inland southern California, you may want to add UCR to your list. It has an early assurance program for its medical school that you apply to a year earlier than you would normally apply; if admitted, you would be able to avoid spending a lot of time and money in the regular medical school admission process (pre-meds who apply typically apply to 15-30 medical schools at a cost of $7,500 or so and feel lucky to get one admission).
https://somsa.ucr.edu/thomas-haider-early-assurance-program