The EPA indicates that indoor levels of pollutants may be 2-5 times, and occasionally more than 100 times higher than outdoor pollutant levels.
The average American spends approximately 90 percent of their time indoors. While most people are aware that outdoor air pollution can damage their health, many do not know that indoor air pollutants can be much more harmful.
The American College of Allergists report that 50% of all illnesses are either caused by, or aggravated by, polluted indoor air and the EPA reports that health effects from indoor air pollutants may not be experienced for years after exposure.
During the months when the temperature is either too cold or too hot to have your windows open poor indoor air quality can be magnified. Because your home is sealed up and doesn't allow harmful pollutants to exit your home, the pollutants can accumulate to levels that can pose health problems.
There is a misconception that when your home is clean the air must be clean. Keeping your home clean can help with certain embedded contaminants, but does nothing for airborne contaminants.
Below is an overview of air pollution from the American Lung Association and offers some advice regarding what you can do to contribute to improved air quality.