Indoor air can be three to five times more polluted than outdoor air, according to the U.S. Environmental Protection Agency, which also notes that most people spend 90 percent of their time indoors.

The ability to measure carbon dioxide sets some air quality monitors apart from others. High CO2 levels signal that air circulation in your home is poor, which can in turn lead to headaches and ...

As temperatures drop and windows close, air quality tends to worsen. Add in more baking, more fires, more candles and more gas heating and the winter months can prove bad for your lungs, especially if ...

The best monitors detect a range of indoor pollutants, and they may also work automatically with air purifiers The air quality monitors we’ve tested detect a variety of pollutants. By Daniel ...

The U.S. Air Quality Index (AQI) is the Environmental Protection Agency’s tool for reporting outdoor air quality and health. The AQI includes six color-coded categories, each corresponding to a range ...

The ability to improve air quality in your home depends less on personal behaviour and more on who owns the building.

In a world of increasing wildfires and invisible irritants, we consulted with experts to explain why and how to measure air quality in your home and take steps to correct it. By Terri Williams ...