If you’re in the L.A. area, you can say, “Duh” right now.
I point out to you an informative article from cbs2.com on How To Keep Cool As Temps Rise
Also, it was mentioned here when it was HOT last year, but there are actual Cooling Centers around L.A. especially for seniors and others at risk during heat waves such as this one. More info can be found at the Department of Community and Senior Services site; a PDF of the 2007 Cooling Stations is also available.
Or, as mentioned on the LAFD Blog:
Stay cool, everyone!