
1) Art genre 2) Works around town 3) Works vulnerable to rain
Found on
https://www.crosswordclues.com/clue/street-art

Street art is visual art created in public locations, usually unsanctioned artwork executed outside of the context of traditional art venues. The term gained popularity during the graffiti art boom of the early 1980s and continues to be applied to subsequent incarnations. Stencil graffiti, wheatpasted poster art or sticker art, and street installa...
Found on
http://en.wikipedia.org/wiki/Street_art

all forms of decoration or inscription that are applied illegally in public places but do not conform to the subway or hip-hop style of graffiti art. It may include stencil graffiti, stickers, paste-ups, three-dimensional sculptures, and paintings on paper, wood or metal that are than attached to public walls.
Found on
http://www.graffitiheart.org/glossary/
No exact match found.