You can build an air purifier with a HEPA filter for about $40 with parts from your local hardware store and protect yourself from dust, viruses, smoke from wildfires and other lung irritants. The Environmental Protection Agency’s (EPA) Air Quality Index highlights the local air quality in your area. The higher the number, the worse the air pollution. When the AQI is over 100, using an air filter indoors, with HEPA filters or filters rated MERV 12 or higher, can help to clean the air. Air filters can help protect against colds, flu, and COVID as well. Jeffrey E. Terrell, former director of U-M Health’s Michigan Sinus Center, demonstrates how to build a DIY air purifier at home. Read: "Wildfires: How to protect your lung health in poor air quality" and more news from Michigan Medicine’s Health Lab: https://www.michiganmedicine.org/health-lab/wildfires-how-protect-your-lung-health-poor-air-quality *Note: When this video was made, the cost of materials was approximately $25. This has increased due to inflation. Follow Us: Facebook: https://www.facebook.com/MichiganMedicine Instagram: https://www.facebook.com/MichiganMedicine Twitter: https://twitter.com/umichmedicine #AirQuality #AirPurifier #LungHealth