> Clearly everywhere that recorded record temperatures last month was either next to a runway

I'm not saying he's right but we had here one of the highest temperatures recorded in France these days (not the highest, but we did reach a bit more than 42°C) and there's a runway just a kilometre away or so. QED.

It's used approximately twice a week by Cessnas, but probably on this day the plane had directed its exhaust on the weather station and also straight on our garden.

Not sure if the pilot was French, but there's a good chance it was an English immigrant.