SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT
Valid: Wednesday, July 4 through Thursday, July 5, 2018
Air quality is likely to reach unhealthful levels in areas throughout the South Coast Air Basin and in the Coachella Valley at times through July 5. Emissions from fireworks are expected to contribute to elevated levels of particulate matter (PM2.5 and PM10), which can reach the Unhealthy for Sensitive Groups air quality category, or higher, during and after the evening fireworks displays related to Independence Day celebrations. The firework emissions are expected to begin in the evening of Wednesday, July 4th with particulate levels expected to remain elevated through the morning of Thursday, July 5th.
The smoke and combustion products from fireworks add to the fine particles already present in the Basin that are primarily caused by motor vehicles, as well as fugitive dust and industrial emissions. Ozone concentrations are also expected to reach the Unhealthy for Sensitive Groups category or higher, in the afternoons and evenings through the holiday into the upcoming weekend in many inland areas.
SCAQMD Advisory updates can be found at the following link: Continue reading