Air Quality Directory
Air quality refers to how clean or dirty the air you breathe is. Poor air quality may trigger certain breathing problems and other health conditions. Follow the links below to find WebMD's comprehensive coverage about air quality, how it affects your health, and much more.
Control Asthma Triggers
The most important thing you can do to prevent asthma is to control asthma triggers. Here's how.
Manage Dry Indoor Air This Winter
The experts at WebMD tell you how to combat the miseries caused by dry indoor air during the winter.
Air Purifiers: Can They Help Ease COPD?
Should you shell out for an air purifier if you have COPD? Learn how portable air purifiers can help ease COPD symptoms and ward off heart disease.
Indoor Air Pollution: Are You at Risk?
Cigarette smoke and other irritants can build up indoors, causing allergic reactions, asthma, even lung cancer. Learn about your risk factors and what to do.
Spotting Hidden Allergy Triggers, Like Dust Mites, Mold, and Pollen
Why are you snuffling and sneezing? Allergy triggers are hidden everywhere -- is one of these bothering you?
5 Ways to Improve Indoor Air Quality
Air pollution isn’t just an outdoor concern. Mold, formaldehyde, and radon can make indoor air unhealthy. Follow these 12 steps to clean up the air in your home.
Asthma and Cities: Which Cities Rank Best?
You may already know the worst cities for asthma. But what about the best cities for asthma sufferers? Here's what to look for if you're living with asthma.
Slideshows & Images
Slideshow: 10 Worst Cities for Asthma
If you have asthma, some cities are harder places to live in than others. Here are the Top 10 “Asthma Capitals” for 2015, according to the Asthma and Allergy Foundation of America.
Slideshow: Surprising Sources of Indoor Air Pollution
Surprising Sources of Indoor Air Pollution
Air pollution is likely worse inside your home than out. See how radon, secondhand smoke, and even air fresheners can harm your family's health.
Almost half of Americans breathe dirty air. Does your city make the list of the nation’s cleanest cities -- or the smoggiest? WebMD shows this year’s winners and losers; some of them may surprise you.