How to read your Laser Egg display

The Laser Egg equips you with color-coded, at-a-glance, and detailed readings for multiple air quality parameters.

In this article, we are going to discuss the different display screens offered on the Laser Egg, as well as some key icons that may appear on your display. Feel free to jump ahead by clicking one of the links below:

Display screens


Display screens 

Your Laser Egg offers different display screens for various measurements. Press the Mode button located on the top of your Laser Egg to cycle between these screens to better analyze your air. 



The Air Quality Index, more commonly known as the AQI, is an index for reporting daily air quality that ranges from 0-500. The higher the AQI value, the greater the level of air pollution and the greater the health concern.

For more information about AQI, feel free to take a look at our AQI wiki page.

PM2.5 concentration


This display screen indicates the amount of fine dust, measured in micrograms, per cubic meter of air. For more general information about PM2.5 and how you can manage fine dust, check out our blog post on particulate matter

Particle count, temperature, and humidity


In order of appearance from top to bottom, the icons indicate the number of particles >0.3μm per 0.1L of air, temperature (in Fahrenheit or Celsius), and relative humidity.

The >0.3 measurement is an extra measure we provide for people who want to know more about the exact particle counts for research or testing purposes. In general, we recommend looking at the AQI or PM2.5 concentration.

Local weather forecast and outdoor temperature


Use this display screen to view three days of weather forecasts and current outdoor temperature.

Your Laser Egg will display local weather information and outdoor temperature on your Laser Egg based on your geolocation. After you connect your Laser Egg to the Live Air app, you can automatically see:

  • Your geolocation at the upper left corner of every front display,
  • Local weather forecast for the next three days on weather display, and
  • The outdoor temperature on the upper right corner of the weather display.

Note: This feature is only available for firmware version 1.4.1 and later. You can upgrade to this version via Kaiterra's Live Air app


Turn off the LCD display when dark. 

Overall Index (only available on the Laser Egg+ Chemical and Laser Egg+ CO2)


The Overall Index is developed by Kaiterra to give you an at-a-glance, complete reading of your indoor air quality.

For the Laser Egg+ Chemical, the Overall Index combines readings of both PM2.5 and TVOC concentrations. Based upon the AQI standards you chose in your Settings, your Laser Egg calculates PM2.5 and TVOC concentrations independently and converts the higher value into an index value between 0 to 500, so that you know which pollutant to focus on.


For the Laser Egg+ CO2, the Overall Index combines readings of both PM2.5 and CO2 concentrations. The Overall Index calculates PM2.5 and CO2 concentrations independently and converts the higher of the two values into an index value so you know which pollutant to focus on. 

This is similar to how the U.S. EPA calculates AQI by looking at a range of pollutants and displays the index value for the higher concentration value. You can choose which AQI standard to use in Kaiterra's Live Air app.

TVOC concentration (only available on the Laser Egg+ Chemical)


TVOC concentration as parts per million (ppm)

CO2 concentration (only available on the Laser Egg+ CO2)


CO2 concentration as parts per million (ppm).



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