What does the PM2.5 indicator in my Philips Air Purifier mean?
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 colours indicate the following:Â
* Blue: goodÂ
* Blue-Violet: fairÂ
* Red-Purple: unhealthyÂ
* Red: very unhealthy