Use your quick select tool and isolate the sky and some of the background just beyond the last buildings. Invert the selection, make a copy and change the screen mode to "Screen" at 100%. Using a soft brush at 33% opacity, bring back some of the darker tones on the main boulevard and see if you don't think the original isn't too dark. You can also use the same brush to blend the background selection area back into the total shot....it is just a starting place...but perhaps a place for you to germinate a better way to increase the overall tonal range...in my ever so humble opinion, it is definitely worth the time.