Likely -- I'm in Denver, and it's smokey. The weather patterns seem to be swooping in across the northwest where the fires are, going across Montana, where there are more fires, then coming south past Denver (it's more of an arc, actually). In that path are Yellowstone and the Tetons. Someone a day or two ago said it was still smokey there, enough you couldn't see very far.
Based on past experience, I suspect there'll be smoke across much of the west a large part of the time until the fires are out (or until there is a MAJOR change in the weather pattern), so it may be November or later.