08/26/2026
Yellow vs. Green Mucus: What Does It Mean?
Seeing yellow or green mucus doesn't automatically mean you have a bacterial infection. Mucus can change color as your immune system responds to a cold, viral infection, allergies, or irritation.
Pay attention to the bigger picture. High or persistent fever, difficulty breathing, chest pain, severe weakness, dehydration, or symptoms that are getting worse may require medical evaluation.
Aether Health ER is open 24/7 when respiratory symptoms become concerning.