Hatching has been a nightmare for me. I put 4 accurite thermometer/hygrometers in while testing this incubator before setting eggs in it. Incubator (with a new digital one) always read 10 below those 4 junk accurites.With that much water it should be well above 50%. Have you checked your hygrometer for accuracy If it really is a true reading you can add a couple wet sponges to the bator, but I'd sooner think the hygrometer is off unless Illinoise is a very dry state??
Last night I ordered an incutherm temp/humidity gauge from incubatorwarehouse.com
Hopefully that will make it easier to check the humidity.
I tried to find an aquarium hygrometer at Walmart but did not have any luck with it.
So far out of 27 eggs I have 2 hatched and one pipping. This is the 21st day (Sunday). 1st chick was hatched on friday.