Regarding Purdue admissions, the first place that I would start at is Purdue’s Common Data Set, here, https://www.purdue.edu/oirae/resources.html. Part C7 tells you what admissions factors Purdue considers to be “very important,” “important,” “considered,” and “not considered”; Part C9 of the CDS gives the median 50% for both SAT and ACT scores, as well as the percentage of the entering first-year class falling within certain ranges of SAT and ACT scores. As you can see from the CDS, Purdue views standardized test scores, GPA, and high school course rigor as “very important” admissions factors, and ECs, personal qualities, LORs, and application essay(s) as “important” admissions factors.
Next, I would look at the Purdue Data Digest, here, https://www.purdue.edu/datadigest/, under the link for “Applications, Admits, and Matriculations”. It is interactive, so you can input the parameters that most apply to you (for example, you would be “Non-Resident” under the “Residency” tab). Based on your input, the Data Digest will generate information and create some graphs/charts from which you may be able to make an estimate of your chances for admission. Also, the link to the “New First-Time Beginner Profile” should have useful statistical information as well.
One thing to consider also is that Purdue underestimated its overall yield last year, and had about 500 more admits than it planned for; so there is some speculation that there may be fewer admits for this coming admissions cycle to compensate for that. I don’t know how careful Purdue will be in the future regarding admissions, given this recent history.
Based on your specific numbers, and assuming (A) that your ACT or SAT test scores will be commensurate with your GPA and (B) that you continue to take the most rigorous courses offered by your high school, I think that you would be competitive for admission to the College of Engineering, the College of Science, or the College of Agriculture at Purdue (I don’t know in what college you would apply/matriculate).