I highly doubt there is anything wrong with your iPhone. There could indeed be a problem on Apple's end even though its status page doesn't depict a problem. Can you surf the internet via your mobile data?
I'm in PA and there are no issues here with Siri. That said, I agree with D, I don't think your iPhone is the problem. Sometimes Siri is a little off. Maybe tomorrow will be better.
I'm in pa and mine for the most part hasn't worked all day. Every now and then I'll get one thing to work but the majority doesn't. Been on the phone with apple 3 times today. 2 out of the 3 times they said there was an issue with Siri the last time the guy said there wasn't. Here's to hoping tomorrows better lol.