Using crowdsourced data from home air quality monitors, scientists found that vulnerable people and communities of color are disproportionately exposed to air pollution from firework celebrations.
Fireworks over North Hollywood, California. The smoke and particles created by fireworks are especially problematic for vulnerable people, often in Black and Hispanic communities.
And while the pollution from a single fireworks display tends to dissipate quickly, many fireworks being set off over the Fourth of July can cause regional air pollution levels topollution during festivals. “However, the concentrations can be high enough to trigger health effects, especially for children and older adults and those living with respiratory diseases.”
The researchers found that Fourth of July fireworks pollution, although transient, can be significant. In Orange County, hourly levels of PM2.5 rose up to three times higher than normal on July 4, 2019, while Los Angeles County pollution levels soared up to 10 times higher than average on July 4, 2020. The festivities in the L.A. metro area last year produced as much smoke as a moderateVulnerable populations appear to be more exposed to this pollution: On average, the authors found that PM2.
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