NEW YORK- Fourth of July fireworks will fill the air with spectacular sights but also pollution.
Researchers checked 315 locations around the country after fireworks displays and found the pyrotechnics temporarily boost the level of microscopic particles on the night of July 4th. At 9 and 10 p.m. the levels of pollution were twice the normal rate.
Overnight, they tapered off and fell back to normal by July 5th. Other studies show breathing in the particles can cause a health risk for children, older adults, people with heart disease, asthma or other lung diseases.
This new study did not look for health effects. The EPA suggest people watch fireworks from upwind so the particles blow away from them.