What time did he wake? On a no nap day have him in bed 11-12 hrs from waking, sometimes less depending on the kid. They really feel it when the nap doesn't happen. Agree with Charli, let's see the routine.
It sounds developmental, no chance of illness right? Last night we had a NW from my 2.5yo who was hanging over the crib rails crying 'water' over and over again. He finished all his water. This morning he had a runny nose and generally looks like he's got a cold.