4th of July Fireworks Helped Produce Worst SoCal Air Quality in Over a Decade Even though it was illegal to set off fireworks in many parts of California during the 4th of July, it did not stop many in Southern California this year. The use of both legal and illegal fireworks produced some of the worst air quality in over a decade for the region. Related: Lake Tahoe Trashed by July 4th Revellers The […] Ryan Flynn | July 15, 2020 2 Comments