Qenya
fanya
noun/adjective. sky; white
ilu vanya, fanya, eari, i-mar, ar ilqa ímen
the World is fair, the sky, the seas, the earth, and all that is in them
helle
noun. sky
malina
adjective. yellow
ninqe
adjective. white
There are more words but they are from Tolkien's earlier conceptional periods. Tolkien likely changed these words as he evolved the aesthetics and completeness of the languages. You may even find languages that Tolkien later rejected. Do not mix words from different time periods unless you are familiar with the phonetic developments.
Below: Tolkien's Late Period (1950–1973). These are from Tolkien's late conceptual period — his most settled forms of the languages. Prefer these over the earlier ones above when composing new text.
A noun in The Etymologies of the 1930s glossed “sky” derived from the root ᴹ√ƷEL of the same meaning (Ety/ƷEL).