'''Fynstowwe''' is [[mikroskopiesMikroskoop|mikroskopiese]]e [[deeltjie]]s van [[vaste stof]] of [[vloeistof]] [[materie]] [[suspensie (chemie)|gesuspendeer]] in die [[atmosfeer van Aarde|lug]]. Die term ''[[aërosol]]'' verwys gewoonlik na die fynstof/lug [[mengsel]], in teenstelling met die fynstowwe alleen.<ref>{{cite book |vauthors=Seinfeld J, Pandis S |title=Atmospheric Chemistry and Physics: From Air Pollution to Climate Change |edition=2nd |publisher=[[John Wiley & Sons]] |year=1998 |location=Hoboken, New Jersey |isbn=978-0-471-17816-3 |page=[https://archive.org/details/atmosphericchemi0000sein/page/97 97] |url-access=registration |url=https://archive.org/details/atmosphericchemi0000sein/page/97 }}</ref> Bronne van fynstowwe kan natuurlik of [[antropogeniese gevaar|antropogenies]] wees.<ref>{{cite journal |vauthors=Plainiotis S, Pericleous KA, Fisher BE, Shier L |date=January 2010 |title=Application of Lagrangian particle dispersion models to air quality assessment in the Trans-Manche region of Nord-Pas-de-Calais (France) and Kent (Great Britain) |journal=International Journal of Environment and Pollution |volume=40 |issue=1/2/3 |pages=160–74 |doi=10.1504/IJEP.2010.030891 |url=http://www.harmo.org/Conferences/Proceedings/_Crete/publishedSections/p398.pdf }}</ref> Hulle het impak op klimaat en [[neerslag]] wat menslike [[gesondheid]] nadelig beïnvloed, op maniere bykomend tot direkte inaseming.
