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    GlossaryPM2.5

    refers to airborne particles smaller than 2.5 micrometers

    PM2.5, or Fine Particulate Matter, refers to tiny particles or droplets in the air that are 2.5 micrometers or smaller in diameter. These particles are small enough to penetrate deep into the lungs and even enter the bloodstream, posing significant health risks such as respiratory and cardiovascular issues.

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