Extreme cold, stronger winds, and drier air quality can make breathing more difficult, especially if you have chronic obstructive pulmonary disease (COPD). For individuals with COPD, symptoms can be made worse by cold weather, as breathing in cold air can irritate the lungs and trigger flare-ups. Flare-ups can cause worsening symptoms such as coughing, shortness of breath, excess phlegm production, and in some cases, can lead to hospitalization. Understanding COPD and how to manage it in the cold weather can help you stay safe and healthy through the winter months.