nlspace said:
Air density is proportional to atmospheric pressure, but inversely to temperature and humidity.
So a hot humid day in New Orleans could have an air density like a cold, dry day in Denver.
Which is why I qualified my statement about air density with:
... assuming all other things are equal ...
Given similar atmospheric conditions (temperature, humidity, etc), air density at 5000' (Denver) is roughly 15% lower than at sea level. So, on average, an EV in Denver will go farther per kWh than an identical one at sea level,
all other factors assumed equal.