SCAQMD reports that July 4th fireworks had most negative impact on air quality since the Bobcat fire
- Fourth of July fireworks in the Southern California region has been the worst since the Bobcat Fire last November says the South Coast Air Quality Management District
- Despite being 14% lower than last Fourth of July pollution levels, the level of fine particles in the area are still higher than normal
- Officials have also reported that concentrations of PM2.5 were 70% higher than previous years between 7 pm on the 4rth and the next day at 7 am in the South Coast Air Basin
