Lost Black Cat with Unique Features in Skokie

Male cat, 8 years old, around 10 pounds, microchipped, fully black with some white hairs on his chest, a watery right eye, missing fur on his legs and belly due to allergies and extra toes on his paws. He usually goes outside some nights and stays on our porch or in our yard for an hour or two then comes back inside but didn't this time. We are wondering if something scared him and he ended up running off too far and got lost. He likes to hide under cards and in bushes so worried he potentially got stuck in somebodies garage if he was hiding.