The Lower Reaches
The lower altitudes of the Skies are hot and oppressive. The only inhabitable islands are dwarven darkhomes: hollow, barren islands containing dwarven cities. The most famous are Deepsky Citadel, the dwarven capital, and Mount Ore.
Below Deepsky is the Flaming Skies. The heat here is incredible; able to melt even dwarven metal-clad ships. No explorers venture lower than this – to do so spells certain death.
Temps in the Lower Reaches range from 120 degrees Fahrenheit upwards. The further a ship descends, the higher the temp soars.