This was taken in Oakbrook, Ill., which is a western 'burb of Chicago. 3G speeds have slowed down a bit within the last week and a half for some reason. Was averaging 1.00-1.5MBPS pretty regularly, even in the office.
Read a couple of articles on ons4gru.com that in regards to Chicago, Sprint's strategy was to start outside Chicago proper and work their way in. So most of the Chicagoland area (burb's, NW Indiana, etc.) should have LTE by October and Chicago will be the last to get it by years end.
Supposedly areas in NW Indiana are actually up and running with LTE but it's never been confirmed.