לַעֲשׂ֣וֹת לָר֣וּחַ מִשְׁקָ֑ל וּ֝מַ֗יִם תִּכֵּ֥ן בְּמִדָּֽה׃
Nang itakda Niya ang timbang ng hangin, at sukatin ang tubig ayon sa takdang sukat;
Rashi
To make with it a weight for the wind, for each land according to its strength, and so the water according to its measure, according to what each land required to water it. There is an arid land which requires much rain, and there is a land that does not require so much.
Malbim
As when He gave weight to the wind.18Elsewhere (glosses on Genesis 1:6), Malbim writes: The ancients did not know that air has weight and used to laugh at statements like 'He gave weight to the wind' until the scientist Galileo came and found a device for measuring air and showed that it has weight.