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        What is the Difference in Particulate Matter PM2.5 and PM10?

        What is the difference between pm2.5 and pm10?

        What is Particulate Matter?

        Airborne particulate matter (PM) is not a single pollutant, but rather is a mixture of many chemical species. It is a complex mixture of solids and aerosols composed of small droplets of liquid, dry solid fragments, and solid cores with liquid coatings. Particles vary widely in size, shape and chemical composition, and may contain inorganic ions, metallic compounds, elemental carbon, organic compounds, and compounds from the earth’s crust. Particles are defined by their diameter for air quality regulatory purposes. Those with a diameter of 10 microns or less (PM10) are inhalable into the lungs and can induce adverse health effects. Fine particulate matter is defined as particles that are 2.5 microns or less in diameter (PM2.5). Therefore, PM2.5 comprises a portion of PM10.

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        2021 California Wildfire Season Looks Extreme and Dangerous

        2021 California Wildfire Season Looks Extreme and Dangerous

        In California, raging wildfires seem to appear like clockwork every summer and fall, damaging property, claiming people's lives, and polluting the air we breathe. What was once traditionally the “wet season” is no longer immune from bouts of dangerous fire weather. California’s wildfire season is expanding, and weather changing climate is a leading cause.

        Wildfire Season in California 2021

        This week's unusually early Red Flag Warning is just a sign of things to come, according to California's top emergency and fire officials, who gathered for an event in the East Bay to kick of Wildfire Preparedness Week. With dry warm winds swirling above, California's top fire officials are sending a loud warning, that this upcoming fire season could quickly become the worst on record.

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        When Is California Fire Season this Year?

        When Is California Fire Season this Year?

        In the past, the California fire season was mainly from May through October. However, with climate change as a contributing factor, most recent disasters show that the season is beginning earlier and ending later each year, with some experts suggesting that the fire season in California is now year round.

        Here is what you need to know about the history and future of fire season in California:

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        Wildfires Made California Air Quality Among Worst in the World in 2020

        Wildfires Made California Air Quality Among Worst in the World in 2020

        2020 was a bad year for many reason but most saw air quality improve in much of the world, except California. Pandemic lockdowns helped improve air quality worldwide in 2020, the U.S. saw its air quality worsen — particularly on the West Coast — thanks largely to record-setting wildfires and toxic smoke.

        Southern California dominated the list of most polluted U.S. cities in 2019, the fires of 2020 moved that distinction to Central and Northern California, according to the annual report released Tuesday, March 16, by IQAir, a Swiss company that has partnered with the United Nations to create the world’s largest air-quality data platform.

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        Wildfire Smoke is up to 10X More Harmful than Other Air Pollution

        Wildfire Smoke is up to 10X More Harmful than Other Air Pollution
        Thick smoke from record wildfires covered Northern California last summer and fall. It turned the Bay Area skies an alien orange color, raising health concerns over a hazard that is increasing as temperatures continue to climb and poorly managed forests burn out of control each year across the West. more...

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