http://www.forbes.com/sites/jeffmcmahon/2011/03/28/three-sites-where-you-can-monitor-u-s-radiation-levels/
Which will probably give you crap info, but hey. The only way to know fer shure is to have a Geiger counter, and a network of friends all over the planet who also have geiger counters. I can't afford one, but. . .
And the fookin' title says 4 sites, but they only give ya 3. Go figure! Maybe one got eaten.
