 District Chief Chris Kinsler. This is WHIO Continuing News. Before you light up your own fireworks this week, know that there are some places you can't do that. In 2021, the state passed a law that made it legal for anyone 18 and older to set off fireworks. But if you live in Dayton, Springfield, or Fairbourn, it's illegal. Now, some cities have the right to criminally charge people for setting off fireworks with a first-degree misdemeanor and up to a $1,000 fine.