Yes, that is possible to check in a single place.
Go to https://steempeak.com
Then choose any post. If the post has an earning in different tribes such as PAL, LEO, NEOXAG, etc apart from STEEM payout then it will show in the pending payout earnings. If the post has no earning in other tribes or if the author does not include the appropriate tags of different tribes, then the post will not show any payout in other tribes and in that case, you can see the pending payout in Steem only.
I have also attached the screenshot, have a look on it.