Particulate matter is a range of particles of dust, dirt, and aerosols that become suspended in the air. PM_2.5 has a diameter of less than 2.5 micrometers and is invisible to the eye. Most bacteria fall under this category.

Particulate matter is a range of particles of dust, dirt, and aerosols that become suspended in the air. PM₁ has a diameter of less than 1 micrometers and is invisible to the eye.

Temperature affects mood, comfort level, and alertness.

When humidity levels are too high, mould and rot can occur while low humidity levels can encourage airborne virus spread and increased susceptibility to colds and respiratory illness.

VOCs (volatile organic compounds) are airborne chemicals, odors and gaseous toxins, causing short- or long-term health effects from minor eye, nose and throat irritations to liver and kidney damage.

A radioactive, invisible gas that comes from the ground. It is the largest cause of lung cancer among non-smokers.

The weight of the air, technically called barometric pressure, can cause headaches, joint pain, and fatigue.

The difference of pressure between two points. Unbalanced air pressure leads to energy losses from leakage and infiltration.

Monitoring when the light is on or off in a space can help identify wasted energy usage.

Noise level should be kept between optimal ranges in areas of long exposure to boost productivity and concentration. High noise levels can leave people with long-term damage. We measure sound intensity in dB(A).

The calculation of how conducive your indoor environment is to the survival of airborne viruses and likelihood of transmission.

A calculation of how conducive your indoor space is for mould growth. Mould thrives in poorly ventilated, humid spaces and is harmful to people’s health.