If you haven’t experienced it before, you should check out the the Washington DC fireworks!
For most of us who are not in Washington DC at the moment, we can watch the Washinton DC fireworks on PBS Television tonight: A Capitol Fourth 2013. Every year has been just AWESOME!! PBS TV runs the program live and then re-runs it again for those who missed it! Here is the link: http://www.pbs.org/capitolfourth/
Here are suggestions for how to get to the Mall: Getting to the Mall Suggestions
Going by car is not suggested. Use public transportation, i.e. take the Metro! Stations nearby include Smithsonian, Metro Center, Gallery Place-Chinatown, Judiciary Square, Federal Triangle and L’Enfant Plaza. The Smithsonian Metro station will be open all day! It typically takes 1 ½ to 2 hours to clear the Mall after the fireworks.
On the 4th of July all visitors must go through security checkpoints to enter the National Mall and areas along the George Washington Memorial Parkway. Coolers, backpacks, packages and persons will be subject to inspection. Possession and consumption of alcoholic beverages and the use of personal fireworks are prohibited.
Here is an explanation of how fireworks work: https://mygrandmasue.wordpress.com/2009/07/04/ever-wonder-how-fireworks-work/