Michael Marshall from Paso Robles and Dalton Smith from Templeton witnessed the dazzling fireworks in Huntington Beach on July 4, 2024, capturing the festive atmosphere. However, the vibrant displays, while enjoyed by many, have a darker side. Each sparkler and explosive contributes to harmful pollution.
After the fireworks dissipate, they leave behind noxious gases, soot, and toxic metals, leading to potential respiratory issues for those below. The South Coast Air Quality Management District warns of hazardous pollution levels across central and southern Los Angeles County, northern Orange County, and Riverside and San Bernardino counties from Saturday evening to Sunday afternoon.
Unhealthy air is expected to affect northern Los Angeles County and southern Orange County as well. Light winds coupled with high firework activity will likely intensify pollution levels throughout the evening, continuing into Sunday. This can lead to breathing difficulties, asthma triggers, and cardiovascular issues according to Los Angeles County Public Health. Individuals facing severe symptoms should seek immediate medical help.
Home pyrotechnics pose a greater risk of cardiovascular problems, according to the American Lung Association, due to close proximity to the pollution. July 4 and 5 are consistently among the region’s worst days for air quality, exacerbated this year by a late June warehouse fire in Boyle Heights.
The L.A. County Public Health Department advises residents to avoid strenuous activity and keep windows and doors shut. Instead of whole house fans and swamp coolers that draw in pollutants, air purifiers or air conditioners are recommended to maintain cleaner indoor air.

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