I can hear a cat meowing

After dark take a good flashlight and look around thoroughly outside (within hearing distance) and look for the reflecting light from eyes. Do the same in every room - and be sure to look UP. Shelves, overhead pipes, dangling light fixtures. Cubby holes. Cats climb into things then find they can't climb out.

If there is a parking lot around you - listen at every vehicle. Sometimes they crawl into engine compartments for the warmth and get stuck.

After that, you'll have to assume it's your imagination.

I hope you find it.

check the ventilation system, may have gotten in a vent or something. Just check EVERYWHERE! poor kitty.

You've checked all the cupboards and closets and basement and attic and all the boxes it might hace gotten stuck in?

Cats hide in the weirdest places. If it's not coming from outside, open your drawers, closet doors, and cupboards in your kitchen. Perhaps the cat is in one of those.

It's gotta be somewhere I would imagine, might be stuck somewhere.

oh boy. i hope its not trapped. it sounds like it is. put out some food and coax it out.

Cats can get into spaces up above cupboards and they can get trapped inside walls. I suggest you ask for for help in locating the meowing quickly.

[c=#BF0000]Maybe they fell into a hole...so sorry for them...[/c]

She's hiding somewhere, silly kitty!

Maybe stuck in a tree outside.Look around shake food bag.

Maybe it’s your cat you never know

Check the trees. It might be a catbird.

I am sorry...

it's all in your mind

lay down on the floor and keep your ear pressed closely when you hear it. See if the vibrations go through the floor, if it does it's somewhere close

search... seeeearch!