Neither of your readings is abnormal nor worrisome.

The EPA RadNet in Boise, ID, does not show any spikes:

[link to www.epa.gov (secure)]

The civilian radiation network real-time data doesn't show anything above 50 cpm in the USA

[link to radiationnetwork.com]

Tulsa OK EPA RadNet reading also normal:

[link to www.epa.gov (secure)]

You are unlikely to be detecting alpha particles, but alpha emitters give off gamma and beta when emitting alpha.

FWIW, normal commuter air travel usually has background exposure 40-50 times what it is at sea level:

[link to spaceweather.com (secure)]