Cardiff City travel to Upton Park to play their first match against West Ham in the Premier League.
Malky Mackay's men made the move from the Championship to the Premier League last season. They became the the second Welsh side in the English top flight joining rivals Swansea City.
The match kicks off at 15:00 BST today.
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A mild night ahead, with a few spots of drizzle in places at first.
The owner of a bar and cafe in Cardiff has been fined for failing to display its food hygiene rating.
Wales wing George North has been referred to an independent expert and won't play for his club until he's had a head assessment.