Dragonflies generally fly at low altitudes (under 25 feet) because it's where their insect prey, such as mosquitoes, flies, and gnats, are found. During migration, species like the globe skimmer can reach altitudes of up to 3,280 feet or even higher, over 20,000 feet in the case of one species in the Himalayas, using winds to travel across continents.
The dragonfly you are seeking is looking for local snacks at an altitude somewhat below 25' so be sure to bring your telescopic butterfly net.