As of Oct. 3, 2026, MyChart is now your new online health record at Children’s Minnesota. Learn more and activate your account now.

Patient & Family Education Materials

Start over with a New Search

Definition: Peak Flow Meter

Peak Flow Meter

Peak flow meters help people with asthma know how well their lungs are working. A peak flow meter can tell if someone's airways have narrowed even before the person coughs, wheezes, or has trouble breathing.

To use the peak flow meter, a person blows into it and then checks the reading. It's portable, doesn't need to be plugged in, and you don't need a doctor or nurse to use it. Some people use a peak flow meter at home to see how well they're keeping their asthma under control.

Back To Top

Note: All information is for educational purposes only. For specific medical advice, diagnoses, and treatment, consult your doctor.

© 1995-2026 KidsHealth ® All rights reserved. Images provided by iStock, Getty Images, Corbis, Veer, Science Photo Library, Science Source Images, Shutterstock, and Clipart.com

MyChart is here! MyChart Epic Systems Corporattion.

MyChart is here

Managing your child’s health care is easier with MyChart, your secure online health record at Children’s Minnesota. Set up and activate your Children’s Minnesota MyChart account.

Give to Kids Day

Today is Give to Kids Day!

A day for our generous community to join together to ensure that even the tiniest hearts get the strongest possible start.