> Cycling at 80F is okay as long as you have a shower at the destination. (Most offices don't.)

1. Shower at home.

2. Have a change of clothes.

In the Before Times (pre-COVID) I cycled to work five days a week and never showered there (even though available). (And believe me: people I worked with would have told me if it was a problem. )

Sweating does not make you stinky. Sweat is not stinky. It is bacteria that causes the stinkiness. If your skin is (relatively) clean, there would not be any (food for) bacteria and you won't stink.

Also:

3. How much you sweat depends on your exertion level: take it easy and you don't sweat as much, at least in the morning when it's cooler. (I'm in Toronto, where summer afternoons are sometimes >30C, and I've cycled home in 35C weather; high-ish humidity too.)