The word(s) "sky" appears 53 time(s) in 51 verse(s) in Quran in Muhammad Pickthal translation.

(11) And thou (Muhammad) art not occupied with any business and thou recitest not a Lecture from this (Scripture), and ye (mankind) perform no act, but We are Witness of you when ye are engaged therein. And not an atom's weight in the earth or in the sky escapeth your Lord, nor what is less than that or greater than that, but it is (written) in a clear Book.

(12) And it was said: O earth! Swallow thy water and, O sky! be cleared of clouds! And the water was made to subside. And the commandment was fulfilled. And it (the ship) came to rest upon (the mount) Al-Judi and it was said: A far removal for wrongdoing folk!

(13) And, O my people! Ask forgiveness of your Lord, then turn unto Him repentant; He will cause the sky to rain abundance on you and will add unto you strength to your strength. Turn not away, guilty!

(14) He sendeth down water from the sky, so that valleys flow according to their measure, and the flood beareth (on its surface) swelling foam - from that which they smelt in the fire in order to make ornaments and tools riseth a foam like unto it - thus Allah coineth (the similitude of) the true and the false. Then, as for the foam, it passeth away as scum upon the banks, while, as for that which is of use to mankind, it remaineth in the earth. Thus Allah coineth the similitudes.

(15) Allah is He Who created the heavens and the earth, and causeth water to descend from the sky, thereby producing fruits as food for you, and maketh the ships to be of service unto you, that they may run upon the sea at His command, and hath made of service unto you the rivers;

(16) And We send the winds fertilising, and cause water to descend from the sky, and give it you to drink. It is not ye who are the holders of the store thereof.

(17) He it is Who sendeth down water from the sky, whence ye have drink, and whence are trees on which ye send your beasts to pasture.

(18) Allah sendeth down water from the sky and therewith reviveth the earth after her death. Lo! herein is indeed a portent for a folk who hear.

(19) And coin for them the similitude of the life of the world as water which We send down from the sky, and the vegetation of the earth mingleth with it and then becometh dry twigs that the winds scatter. Allah is able to do all things.

(20) Who hath appointed the earth as a bed and hath threaded roads for you therein and hath sent down water from the sky and thereby We have brought forth divers kinds of vegetation,