Copa America 2016 -- No Chill In Chile ... Pyro Party After Big Win (VIDEO)

Chile was LIT after their team won the 2016 Copa America title ... literally ... with fans taking to the streets of Santiago for a massive celebration that included some pyrotechnic partying.

Only thing burning hotter than the fires in Chile? Argentina fans after Messi bricked that huge shot ... then FREAKIN' RETIRED after the match.

Congrats to the victors.