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    Philips Support

    What does the PM2.5 indicator in my Philips Air Purifier mean?

    Published on 19 September 2022
    PM2.5 is a scale for measuring real time air quality. Its values vary from 0 to 500. 

    The PM2.5 indication is connected to your Philips Air Purifier’s air quality light ring/bar to inform you in real time about the quality of the ambient air.

    The different colors indicate the following: 

    * Blue: good 

    * Blue-Violet: fair 

    * Red-Purple: unhealthy 

    * Red: very unhealthy
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