This year, in the Pacific Northwest, it's well to have a Plan C and a Plan D!

Inciweb is your best source for current fire locations and other information. You can get the info by state. Just be aware that the situation may change hourly! For an example, we just had a minor, isolated, lightning caused blaze flare up into a monster that is burning most of the south side of Lake Chelan and filling the area with smoke to the point that even people nowhere near the fire are leaving in droves. It went from a tiny fire to 4,000 acres Saturday and as of last night (Tuesday) was up to 25,000 acres.

It may not be quite that dry where you're going, but do keep checking up until the last minute!

EDIT, LATER: So I won't get snarled at by local members (just kidding, 99.9%l our members are friendly and polite and never snarl!), the Wolverine fire is actually burning the west side of Lake Chelan--the lake runs more north-south. This long, narrow lake is down in a funnel for winds, which is of course causing the problem. This will not, however, affect Wyoming or Montana.

EDIT AGAIN, MUCH LATER! I went through 11 pages of Inciweb and could find no listings of large active fires in the areas of the Beartooths or the Wind Rivers. The only one close is in the Big Horn Range which is farther east and therefore downwind.