This reading is an exception. Let's use this mnemonic to remember it:
This morning you want a quesadilla (けさ) for breakfast. You can't wait until tomorrow morning, you NEED it this morning! Imagine eating a delicious quesadilla first thing this morning. Mmm!
I forgot to take my medicine this morning.
My legs have been hurting since I woke up this morning, so I can't move as much as I'd like.
This morning there was a multi-vehicle accident here.