PELLUCID

The pellucid atmosphere is one of the things I enjoy about Tucson, but due to the windiness this afternoon there is a serious lack of pellucidity. The Tucson mountains are looking very hazy from my office window.

DEF:
adj.

1. Admitting the passage of light; transparent or translucent. See Synonyms at clear.
2. Transparently clear in style or meaning: pellucid prose.

[Latin pellūcidus, from pellūcēre, to shine through : per-, through; see per- + lūcēre, to shine; see leuk- in Indo-European roots.]
pel·lu·cid'i·ty, pel·lu'cid·ness n., pel·lu'cid·ly adv.
(American Heritage)