We are on opposite coasts but seems we get similar traffic patterns and spikes. Yesterday had a bit of spike for me too but it was all from small GA aircraft. I had 50+ GA aircraft at once within about 30 nMi while commercial airplanes count were at typical daily volume. Happens here on nice weather days.
Commercial traffic seems down a bit since early September, but the wild spikes in GA aircraft make the trend hard to spot in my case.
I would say all those GA aircraft were up to see the rare blue moon, but the moon didn’t rise until after most of them landed!