I shouldn't wonder if all the air traffic doesn't change the actual wind patterns.

I don't think it likely Jackie. Lived near Pease AFB during Cold War and humongous bombers (SAC) would take off every 15 or 20 seconds and fill the air with contrails. They took off using the Rye Becaon and flew over my back yard. No wind changes - ground to treetops. No weather changes at all were felt or reported.
Contrails is used exclusivelt by all Air Force types I have ever met to designate the white trails left by (especially)jet engines across a blue sky.

I don't think slower piston-driven-engine planes flew high enough to leave contrails.
Anybody?