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Climate & Environment

Get ready for even more air quality advisories this July 4 weekend

The night sky is lit up by fireworks as someone looks at them from afar in a dark picture.
People watch fireworks burst over Los Angeles on July 4, 2020.
(
Frederic J. Brown
/
AFP via Getty Images
)

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Topline:

As if Southern California’s air quality hasn’t been bad enough lately, air quality officials are warning much of the region to brace for hazardous air over the July 4 weekend.

Where the greatest risks are: Areas around downtown Los Angeles, the San Gabriel Valley, and northern Orange County may see hazardous air on the evening of July 4 due to particle pollution from fireworks, according to the South Coast Air Quality Management District. Riverside County and San Bernardino could see hazardous air the next day as the particles from fireworks move east and combine with the region’s elevated levels of air pollution.

Other risks: The Inland Empire and most of Los Angeles and Orange counties — that is, nearly all of SoCal — may see unhealthy air at times throughout the weekend, as they do every year.

Why it’s unhealthy: Exposure to particle pollution can cause chronic coughs in healthy people and flare-ups of symptoms for people with asthma and chronic obstructive pulmonary disease, according to the American Lung Association. If you’re in an area where people set off personal fireworks, the organization said those can be even more dangerous, since they’re closer to the ground and the air we breathe.

What to do: Stay inside if you can, and avoid physical activity outside. Unlike the recent fire at the Lineage Logistics warehouse in Boyle Heights, air quality officials say running air conditioners in your home will help, as will air purifiers, though they recommend against turning on fans that bring in outside air.

Other issues: Visibility in Orange County and the Inland Empire may be low Saturday night due to a soupy blend of high humidity and particle pollution.

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How long the advisory lasts: It’s in place from 5 p.m. July 4 until 3 p.m. July 5.

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