Are there any pagans celebrating the autumnal equinox today?

Yeah, probably that troll shadowfire...

Great question and some really good answers, the key to tolerance is understanding others may not believe what you do and, perhaps finding out a little about what they do believe. 

Yes, many all over the world. Happy Mabon! 

i like fall i hope my ex will allow me to take my daughter on a innocent hay ride

Why, yes there are!  I participate in a whole Mabon ceremony with a group of pagan friends.  Even though I'm not pagan myself I find it quite fun and  beneficial.   It deepens my appreciation for the Earth that provides us sustenance.