Chances for Grad School (3.5 major GPA)

[chemen]

I'm a junior pursuing a B.S. in chemistry and I think I will graduate with roughly a 3.7 GPA (maybe 3.6 minimum) if things go well. I think I might graduate with a 3.5-3.6 major GPA. I'm currently and will take a few chemistry graduate courses as well.

I have some publications in reputable journals for different projects I've worked on with a faculty member and graduate student and by the time I graduate will have done research there for 2 years and including two summers full time (or one summer and an REU with a different faculty in the same field). My PI is well-known and respected in his field.

Earlier in my undergraduate career I also did research at a community college but this research only resulted in a few poster sessions and symposiums, oral presentations (no publications).

I already know what field I want to pursue for research (which is what my publications are based on) and want to attend a top graduate school which (best case scenario) have multiple faculty members working on what I find interesting like Princeton.

What are my chances for graduate school admission (assuming I do well on the GRE and chem GRE) and how can I improve my chances?

[ichisdeno]

I started out strong this semester but one by one my As started turning to Bs. I’m worried I now won’t get into graduate school because my grades although passing are below average compared to the straight A students.