The West Division is all but set and is San Diego State's to lose. Nevada can win the West if they win out which would include a season finale win over the Aztecs, but the Wolf Pack will need San Diego State to also lose to at UNLV. San Diego State just needs to beat Nevada to clinch.
The Mountain is where things are still up in the air (side note: check out this post about who can win the division and all of the scenarios).
Boise State's loss to New Mexico opened up the door for the Lobos and Air Force Falcons to win the Mountain Division.