Is air transparent or translucent or opaque?

Answer 1

Air is transparent when you sit in the woods and look up to see the milky way. Then the wind shifts and the pollution rolls in. Starlight no longer illuminates your path. Whereas before you saw all the stars on the star chart, now you see only the brightest. Whereas you could previously make out the shapes of trees, now only artificial light cuts through the darkness. The air has become translucent.

Then fog rolls through. You can no longer see the man made lights off in the distance. The atmosphere is now opaque.

Answer 2

Air is considered transparent, as it allows light to pass through it easily without scattering. This is why we are able to see clearly through the air.