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Free editable template

Peak flow diary — free printable asthma peak flow chart

A peak flow diary to record your readings over time — morning and evening, with symptoms and notes — helpful for managing asthma and for showing your GP or asthma nurse a clear picture at reviews.

Download free PDF  ↓
✓ Editable in any free PDF tool✓ A2 · A3 · 18×24"✓ Print-shop ready
Free · No email required Peak flow diary printable asthma chart readings over time morning evening symptoms notes managing asthma GP asthma nurse clear picture reviews respiratory breathing health
What you get

Designed to look bought, priced at nothing

Three print sizes

A2 and A3 for home printers, plus 18×24" for a print shop or easel.

Fully editable

Change the wording in any free PDF editor — no design software needed.

High-resolution

Crisp 300 DPI vector text that stays sharp at poster size.

How to use it

From download to display in three steps

  • Personalise. Open the PDF in Canva, Acrobat online or Apple Preview and edit the text.
  • Print. Heavyweight matte card at home for A3 and under; a print shop for 18×24".
  • Display. Frame it or stand it on an easel at your .

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Frequently asked questions

Why keep a peak flow diary?
A peak flow diary is a simple, useful tool for people managing asthma. A peak flow meter measures how fast you can blow air out of your lungs, and recording your readings regularly — typically morning and evening — over time builds a picture of how well-controlled your asthma is. This matters because it can reveal patterns (such as readings dropping before you notice symptoms, or particular triggers), help you and your healthcare team see whether your treatment is working, and provide an early warning that your asthma may be worsening, prompting you to follow your action plan. It's also genuinely valuable to bring to GP or asthma nurse reviews, as a clear record over a couple of weeks helps them help you far more than trying to recall how you've been. Noting symptoms and reliever inhaler use alongside the readings adds helpful context. Importantly, this diary is a tracking aid, not medical advice or a substitute for proper care: use it alongside a personal asthma action plan agreed with your GP or asthma nurse, follow that plan, and seek medical help promptly if your symptoms or readings worsen or you're worried. In an asthma emergency, call 999.
Is it really free?
Yes — no email, no sign-up.
Can I print it more than once?
Yes — print as many copies as you need.