Common reason it is frowned upon within our faith is due to it being considered divination and God forbids divination.
Divination: The ability to uncover secret or hidden spiritual truths to do things like predict the future or make prophetic proclamations.
To better understand the concern of astrology we need to first understand the purposes behind God's creation.
Genesis 1:14–18
14 And God said, “Let there be lights in the expanse of the heavens to separate the day from the night. And let them be for signs and for seasons, and for days and years, 15 and let them be lights in the expanse of the heavens to give light upon the earth.” And it was so. 16 And God made the two great lights—the greater light to rule the day and the lesser light to rule the night—and the stars. 17 And God set them in the expanse of the heavens to give light on the earth, 18 to rule over the day and over the night, and to separate the light from the darkness. And God saw that it was good.
Jeremiah 10:2
Learn not the way of the nations, nor be dismayed at the signs of the heavens because the nations are dismayed at them -
Jeremiah 14:14
And the Lord said to me: “The prophets are prophesying lies in my name. I did not send them, nor did I command them or speak to them. They are prophesying to you a lying vision, worthless divination, and the deceit of their own minds -
Ezekial 12:24
24 For there shall be no more any false vision or flattering divination within the house of Israel. -
Deuteronomy 18:10
10 There shall not be found among you anyone who burns his son or his daughter as an offering, anyone who practices divination or tells fortunes or interprets omens, or a sorcerer
Deuteronomy 18:14
14 for these nations, which you are about to dispossess, listen to fortune-tellers and to diviners. But as for you, the Lord your God has not allowed you to do this.
Job 9:7
7 who commands the sun, and it does not rise; who seals up the stars;
Psalm 8:3
3 When I look at your heavens, the work of your fingers, the moon and the stars, which you have set in place,
Ps...