A little googleing answered my own question of where, but I'm still wondering which ones are good for kids

- The city of Pittsburgh's annual fireworks display starts at 9:35 p.m. over the Allegheny River at Point State Park.


- Bethel Park/Upper St. Clair: 9:40 p.m. in Port Authority parking lot at South Hills Village
- Brentwood: at 9:30 p.m. in Brentwood Park
- Canonsburg: 9:30 p.m. at Canon-McMillan High School
- Crafton: 9:30 p.m. at Community Park on Steuben Street
- Dormont: Dusk at Dormont Park
- Ellwood City Arts, Crafts and Food Festival at Ewing Park - July 3 - July 5 -- Fireworks on Sunday, July 5 at 10:15 p.m.
- Hampton: only on July 3rd 10 p.m. at Hampton Community Park
- Indiana 9:30 p.m. at Mack Park Fairgrounds
- Latrobe: 9:30 p.m. at Legion Keener Park- More info...
- Leetsdale: Dusk at Quaker Valley High School
- Ligonier: 10 p.m. at Idlewild Park
- McKeesport: Dusk at Renziehausen Park
- Monroeville: 9:30 p.m. at Monroeville Mall - More info...
Pittsburgh Fireworks
- Moon Township: 10 p.m. at Moon Park
- Monongahela 9:45 p.m. at the Monongahela Aquatorium
- Mt. Lebanon: 9:30 p.m. at Mt. Lebanon Park
- Oakmont: Fireworks at dusk at Oakmont Country Club on Hulton Road
- Punxsutawney Groundhog Festival 2009: July 4 - Fireworks at 9:30 p.m. 301 East Mahoning Street near State Route 36 and U.S. Route 119 in Punxsutawney, Pa.
- Robinson: Fireworks at dusk at Burkett Recreation and Sports Complex on Park Drive
- Scott: 9:31 p.m. at Scott Park
- Springdale: 10 p.m. at Veterans Field
- West Mifflin: 9:30 p.m. at Kennywood Park
- Waynesburg Lions Club Celebration: Fireworks at 10 p.m. at Greene County Fairgrounds
- Zelienople: Parade at 11 a.m. -- Concert at 8:15 p.m. -- Fireworks at 10 p.m. at Community Park

I want to add that Carnegie is having a day-long celebration on July 5.  I think the activities start at 1:00 and the fireworks are around 9:30.  I assume the activities take place at Carnegie park.

Mt. Lebanon also has activities and a concert leading up to the fireworks display.