As communities prepare for July 4 celebrations, several advisories have been issued regarding the air quality impacts of fireworks. Documents indicate that fireworks on the Mall could lead to hazardous air pollution, prompting the American Lung Association to offer guidance on protecting lung health from firework smoke. Experts reiterate that breathing in firework emissions, which contain heavy metals and airborne particulates, can be harmful. Advisories from Clark County and other regions warn that fireworks may temporarily worsen air quality, particularly in Las Vegas Valley and San Joaquin Valley. Residents are urged to check real-time air quality conditions and take precautions, especially if sensitive to smoke or heat, as fireworks combined with summer heat in areas can exacerbate air pollution. Authorities emphasize the importance of awareness regarding the environmental impact of fireworks celebrations.