It's weak, and I can also hear traffic direct ("Harlem-Roscoe Fire") at about the same strength so unsure how applicable this is to Chicagoland, but the only repeaters I see for 155.0025 are in Lake County...
I've spotted some other un-licensed/un-noted VHF fire frequencies, but I've lost my notes... :^(
I've spotted some other un-licensed/un-noted VHF fire frequencies, but I've lost my notes... :^(