Working hypothesis is as follows:
Solar system with an A class sun.
Planet has a very thick atmosphere which does not allow much visible light in to the surface. (Like dusk in the day time and darkness at night.)
Atmosphere appears static from the surface of the planet.
Atmosphere has multiple layers, some of which move with the rotation of the planet.
A few small meteors have become "stuck" in the atmosphere's lower layers, allowing them to be seen in the day time.
Planet's oceans are small and few, made not of water but some liquid unique to this solar system which evaporates slowly.
Life forms are all plant/fungus/microbe based. No mammal life.
What sort of planet size, distance from sun and rotation might be reasonable plausible in this fictional scenario? Many thanks to anyone and everyone who lends some of their expertise and brainpower in this thought exercise!