thumb|180px|An approaching thunderstorm
Aeromancy (from Greek ἀήρ aḗr, "air", and manteia, "divination") is divination that is conducted by interpreting atmospheric conditions. Alternate terms include "arologie", "aeriology", and "aërology".
Practice
Aeromancy uses cloud formations, wind currents, and cosmological events such as comets, to attempt to divine the past, present, or future.
Cultural influence
In ancient Greece an air-diviner was called aeromantis (ἀερόμαντις) and the practice was called aeromantia (ἀερομαντεία).
The ancient Etruscans produced guides to brontoscopic and fulgural divination of the future, based upon the omens that were supposedly displayed by thunder or lightning that occurred on particular days of the year, or in particular places.
Divination by clouds was condemned by Moses in Deuteronomy 18:10 and 18:14 in the Hebrew Bible. In contrast, English Christian bibles typically translate the same Hebrew words into "soothsayers" and "conjurers" or the like.
Johannes Hartlieb classified aeromancy as one of the seven "forbidden arts", along with necromancy, geomancy, hydromancy, pyromancy, chiromancy (palmistry), and spatulamancy (scapulimancy). It was condemned by Albertus Magnus in Speculum Astronomiae as a derivative of necromancy. The practice was further debunked by Luis de Valladolid in his 1889 work Historia de vita et doctrina Alberti Magni.