Healthy air tips from the American Lung Association and Green Home Guide

Four in 10 people live in places where pollution levels make it dangerous to breathe, according to the State of the Air Report recently released by the American Lung Association. By typing in your state or zip code, you can look up more information on their website about your location's "grade" for air quality and its particular challenges.

Although this report focuses on pollution levels outdoors, the organization also offers plenty of resources on indoor air quality. From a quick checklist of potential issues to descriptions of various indoor pollutants, the website has both basic and detailed tips for what you can do to ensure the air in your home remains healthy to breathe.

Further resources from Green Home Guide

Explore LEED Homes credits on indoor environmental quality