I did look for pictures on the website. The “action” shots show teachers dressed quite casually - one had a t-shirt, another a pair of jeans with a sweatshirt.
The full-time math department faculty has headshots, but only two of them are men. One is wearing a t-shirt, the other a button-shirt and sport coat (no tie). The women are dressed quite casually. The department chair is wearing a t-shirt with one of those pull-over sweatshirts with a collar, that zips halfway down the front. My overall impression is instructors wear whatever they want, which is what I would expect at a community college.
Anyway, I never said I would go to the interview wearing a t-shirt and jeans. Of course I’m going to dress up to the best of my ability. I don’t have hundreds of dollars to plunk down on a suit, so I’m hoping I can get away with a nice pair of pants, a dress shirt and a sport coat (all of which I already own).