Almunia, who made his 91st appearance for the club in the 4-0 Champions League win against Porto on Tuesday, is relishing the chance to follow in the footsteps of former Arsenal greats David Seaman and Bob Wilson and becoming an Arsenal legend.
"Of course the No1 jersey at Arsenal is very important," he said. "It has been famous for the great goalkeepers in the club's history that have worn it before so it's a big responsibility.
"But at the same time it's a great thing to enjoy for me and I hope that people can be happy with my performances.
"I'm very happy to wear this fantastic number for Arsenal and I'm pleased with how things are going; I'm feeling very well and we have not conceded too many goals, although we always need to improve.
"I think this season I am growing as a goalkeeper and hope I can grown more as the season progresses."