Don't miss him if you can avoid it.
I suspect that if he's over in the States he likely won't just be making one appearance. Drop him a email via the website and ask for details. I see he's off to New Zealand in mid-January, and than in Feb back via the States.
And here is the website for First Night in Pittsburgh. Well behind its promised schedule on its events details, I see. (Alcohol-free venues too, I note - that'll be a change from the normal Les Barker gigs back here. You really are a different country. And quite entitled to be, of course.)