Wrong CO2 and humidity levels can be dangerous to your health

Research shows that exposure to high levels of CO2, but also to wrong levels of humidity, are often the cause of annoying health problems. At night, in your bedroom, you may experience a sore throat, mild headaches or a stuffed nose. During the day, in the office, you may experience fatigue, even more headaches and dry or irritated eyes when wearing contact lenses. People that are used to very clean living environments, or spend a lot of time outdoors, may be more sensitive than others.

For a healthy indoor environment, with good indoor air quality, the AurAir® air quality meter has an easy to read and understand interface, using color coding to present the different air quality levels. The AurAir device measures CO2 in parts per million (ppm) and humidity in relative humidity percentages.

Based on scientific research (*1) the AurAir uses the following color-coding for its CO2 measurements:

  • 400 to 800 ppm is good and is indicated as green on the display (400 is the level outdoors)
  • 800 to 1500 is medium and is indicated in yellow
  • 1500+ is bad and is indicated in red (1500 is really the limit for indoor air)
    • 5000 ppm is very bad and is allowed for max 8 hours a day
    • 10.000 ppm is very bad and is allowed for max 15 minutes a day
    • 10.000+ can be deadly

The available scientific research (*2) provided us with the following indoor humidity levels:

  • Between 40% and 60% the humidity levels are perfect
  • Under 40% the air is too dry, which may affect your eyes (dry eyes, especially with contacts)
  • When over 60%, the air is bad for your lungs, and causes mold in confined spaces.

(*1) Is CO2 an Indoor Pollutant?

(*2) Indirect Health Effects of Relative Humidity in Indoor Environments