Fireworks Air Pollution Spike in USA Post 4th of July

The animation below shows the accumulation of fine particulate (PM2.5) after Independence Day fireworks set off on the night of July 4. In addition to the day long pollution from the barbeque grills and holiday car trips.
The timeline begins in the early hours of July 5, with orange and red colored unhealthy levels continuing through the still night. Many of these metro areas in the Midwest, East and Southeast recently had their air basins flushed clean by winds or rain.

anim_pm25_usa_post_fireworks_0704

Source: airnow.gov

Originally posted

 

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