Did they get rid of it? On ios 9, after scrolling notification panel, the alarm was giving a notification at the bottom of the screen. Anything in ios 10?
The "Up Next" widget shows alarms. Though it seems there is a threshold of how long away time wise to show an alarm. Setting one for any time before 9am (when it's 11:59pm) won't show. So it looks like a 9 hour threshold.
Tested with 5:15am 6:15, 7:15, 8:15 and didn't show until I set 9:15am. (See screenshot)
I had this issue where mine didn't show up in the Up Next widget. Just go into the stock calendar app and uncheck all your calendars first and check if your alarm shows up in the widget. Then re-add the calendars.