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Home»All News»Heatwave may threaten local air quality in the Victor Valley
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Heatwave may threaten local air quality in the Victor Valley

Victor Valley News GroupBy Victor Valley News GroupMay 27, 2020Updated:May 27, 20202 Mins Read
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(Hugo C. Valdez, Victor Valley News)
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VICTOR VALLEY, Calif. — Weather forecasts predict triple-digit temperatures for much of Southern California this week, leading to an increase of concern for air quality in the Mojave Desert Air Basin, which includes the High Desert in San Bernardino County and Palo Verde Valley in Riverside County.

The Mojave Desert Air Quality Management District is tracking daily Air Quality Index forecasts which may worsen to unhealthy categories in the late afternoon on Wednesday and Thursday.

When daytime high temperatures reach near and into triple digits, they can lead to elevated concentrations of ground-level ozone, a chemical reaction that occurs when pollutants emitted by cars, power plants, refineries and other sources chemically react in the presence of sunlight. Ozone at ground-level — the main ingredient in “smog” — is a harmful air pollutant because of its effects on humans and the environment.

Hesperia, Phelan, Victorville and immediately surrounding communities are especially susceptible to worsening air quality due to their proximity to the Cajon Pass and Interstate 15, from which the Mojave Desert gets much of its ground-level ozone. “Transport” air pollution travels up through the Cajon Pass from the heavily polluted Greater Los Angeles region before dispersing north of the Pass.

High daytime temperatures and low relative humidity also present an increased risk for wildfires and related smoke impacts. Wildfire smoke creates a significant concern to human health as the fine particulates can lodge deep in the lungs and trigger immediate physical reactions.

High daytime temperatures and low relative humidity also present an increased risk for wildfires and related smoke impacts. Wildfire smoke creates a significant concern to human health as the fine particulates can lodge deep in the lungs and trigger immediate physical reactions.

High daytime temperatures and low relative humidity also present an increased risk for wildfires and related smoke impacts. Wildfire smoke creates a significant concern to human health as the fine particulates can lodge deep in the lungs and trigger immediate physical reactions.

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(source: MDAQMD news release)

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