The Molekule Air Score assesses your particle and chemical levels to score your indoor air in real time. It also decides fan speed while Auto Protect modes are on, and shows your Air Quality score as a clean, colour-based metric on your app and purifier screens.

Organic chemicals in the air, or volatile organic compounds, may come from furniture, clothing, wildfire smoke, or paint, to name a few. Most are harmless, but some can cause allergic reactions and high levels may cause respiratory problems.

Invisible and extremely small, PM1.0 can be pulled into the lungs. They are usually bits of smoke from burning food, fuel or wildfires. Long-term exposure to microfine particles may damage the lungs.

Invisible and small enough to be pulled deep into the lungs, PM2.5 can include dust, wildfire smoke, and fine powders. Long-term exposure to fine particles may damage the lungs.

Large but not large enough to be seen, PM10 can include pollen, mould spores, and pet dander. Allergens on these particles may cause allergic reactions.

A colourless, odourless gas, CO2 is a byproduct of human respiration and fuel burning, like natural gas. High levels of CO2 may cause drowsiness and indicate a higher amount of aerosols or respiratory droplets from respiration in the air.

Corresponding to water vapour in the air, relative humidity is affected by bathing, cooking, or natural climate. Low levels can dry out tissues, while high levels can encourage mould and dust-mite growth.