Washington records world’s worst air quality for a city after over 850,000 Fourth of July fireworks
via theguardian.com
Short excerpt below. Read at the original source.
Hourly concentrations of particulate matter rose to 6.7 times their pre-fireworks levels, according to an analysis Washington DC residents breathed in “unhealthy” air for hours after a 40-minute Independence Day fireworks show over the National Mall on Saturday night, with the country’s capital briefly recording the worst air quality of any major city in the […]