Planting trees and bushes and plants around the property helps cool down the air around it too

Or modifying what you have already.

Take a south or west facing window with a balcony & railing in front. By installing planter boxes on the railings and growing black eyed susans / morning glory / any climbing flowers, letting them grow up bamboo poles space 4" apart, you can create a heat absorbing barrier. The plants block and use the energy that would have been absorbed by your house. Unlike shades/screens they won't heat up and begin radiating heat themselves.

Female Hops are another great planting option. They cannot reproduce without a male plant, and every year they will grow back stronger. Train them underneath your building eaves and they will reduce the amount of heat energy your house absorbs while producing aesthetically pleasing "cone" flowers.

....

Also insulation. In Canada we need lots of insulation under our roofs for the winter. So while during the summer our black top roofs absorb a lot of heat, not as much of that heat is transferred to the indoor air as a roof with less insulation.

And hot in the winter.

Heat exchangers are a good step forward IMO. They just need a small fan to function if there is like no wind.