Twin Cities Air Service was created in 1992.
David Brown
Brown haze near cities is often caused by air pollution from vehicle emissions, industrial activities, and burning of fossil fuels. These pollutants can react with sunlight to form ozone and other smog-forming compounds, creating the brown haze that hangs over urban areas. Factors such as weather patterns and geography can also contribute to the buildup of this haze.
The brown haze that develops in sunny cities is known as smog. This is typically a result of air pollution from vehicle emissions, industrial activities, and other sources reacting with sunlight to create a mixture of pollutants in the atmosphere.
David Brown
Jordin Sparks featuring Chris Brown ''No Air duet with Chris Brown(C) 2008 ''
There aren't any cities in the air.
Usually in cities it can be humid because of the industries and cars and low leverage and in the hills the air is more cool because, The lower air pressure allows the air to expand, causing it to cool.
Cities located at high altitudes tend to have lower air pressure, such as La Paz in Bolivia, Lhasa in Tibet, and El Alto also in Bolivia. These cities are situated well above sea level, which results in lower air pressure compared to cities at sea level.
If your talking about the brown gas u see above cities then that is smog and it consists of carbon monoxide and ozone.
smog.
The distance between the two cities' major airports is about 1,100 air miles.