(Click to enlarge.)
March 2010 (the top, orangish line here) is significantly above any month back to (and including) 1998. In fact, every day in March set a daily record. The same was also true in February 2010, and in the last half of January.
And, just to clarify, the current El Nino is not (yet, at least) nearly as strong as 1998's.
Disclaimer: Global warming is, of course, just a myth propagated by liars, thieves, and goat fuckers. Pay no attention to the actual data, which is secretly and shamelessly altered daily by the top scientists in the world. (Changing "2s" to "8s" is their favorite ploy. Changing them to "9s" would, of course, be too suspicious. Don't worry, these guys know what they're doing.)