The match comes from Vicarage Road and will be shown exclusively live on Sky Sports.
Leicester won 2-1 in the reverse fixture earlier this season, which was the first time the clubs had met in the Premier League. However, the Foxes have won on just one of their last seven visits to Vicarage Road.
But Leicester’s only defeat in their last 10 Premier League games came at Arsenal in their most recent away fixture. Watford are unbeaten in three home league games – but the last two have been goalless draws.
BT Sport will also broadcast live Premier League football today in the form of the North London derby between Tottenham Hotspur and Arsenal. Coverage begins at 12.00pm on BT Sport 1.
Highlights of both matches will feature on tonight’s Match of the Day, which is live on BBC One from 10.20pm.