Glen Ryan's side are unable to field a complete team due to Sigerson Cup commitments.
Westmeath's scheduled O'Byrne Cup game against Kildare has been called off.
With Sigerson Cup fixtures slated to be played this evening and tomorrow, Kildare can't field a full team for tomorrow evening's intercounty contest.
Neither side can progress to the knockout stages after losing one of their two games in the competition so far.
Yesterday Louth pulled out of their fixture with Wexford for similar reasons