[theoreticalmal]

Only marginally relevant, this is one reason I use swamp coolers in my home. My windows are open 24/7, 4 months of the year. I hear the birds in the morning and it’s so much more pleasant than shutting in an air conditioned box, in my opinion

[Mistletoe]

Does the humidity not cause problems? What is the relative humidity in your home?

[SoftTalker]

I'd guess somewhere dry. Swamp coolers don't really work in humid climates.

[IneffablePigeon]

Unlikely to be a problem if the windows are open, in most climates.

[meroes]

Do you not get massive amounts of dust?

[mmooss]

Why would opening the windows result in dust, except where there a lot of dust outside (near a construction site)?

[wahnfrieden]

Having any roads/cars around is a major problem. Brake and tire dust. Many people live near roads and traffic.

[bluGill]

swamp coolers work - imples desert - implies dust