Watched this.
At first I thought it was a problem with his autocue but it became clear it wasn't that.
He was as though he couldn't get his words out, constantly stumbling over and almost slurring what he was saying and not making much sense at times. His left eye kept squinting almost shut too. He did the full news broadcast like this too, was quite concerning. Was half expecting him to be replaced midway through but he wasn't.
I really hope he's okay.