Barometric Pressure Tracker
Language: English
English日本語DeutschEspañolFrançais
Get the app

Barometric pressure app for iPhone and iPad

Watch the pressure, log how you feel, and see if the two line up

Barometric Pressure Tracker shows the sea-level pressure where you are, whether it is rising, falling or steady, and an hourly chart of the hours ahead. Log a headache, a migraine or a sinus flare in a few taps, and over time see how often your entries came within a day of a big pressure change.

Download on the App Store

Free download · iPhone and iPad · iOS 17 or later

Today screen in Barometric Pressure Tracker: 1,009.0 hPa in San Francisco, pressure falling, and a heads-up about a drop overnight

What it does

One app for the pressure outside and the symptoms you notice

Most weather apps bury pressure in a details panel. Here it is the headline, next to a log built for the moments when you least feel like typing.

How the pattern view works

Do your symptoms follow big pressure changes? Your own log can show you

Plenty of people say they feel a storm coming. The research is genuinely mixed: some studies link falling pressure with more headache days, some find nothing when everyone's data is pooled, and one German study found weather sensitivity in a subgroup of people only. The practical question is which group you belong to, and the only data that answers it is yours.

The Your pattern card compares two numbers. The first is the share of your entries that came within 24 hours after a major pressure change, which the app defines as a change of 6 hPa or more within 6 hours. The second is how often any hour falls in such a window at the places you logged from. If the first number is clearly higher, that is worth knowing. If it is not, that is worth knowing too.

  1. Log as it happens

    Tap the symptom, set the severity and save. Remembered yesterday's headache only now? Back-date it, and the app looks up the pressure from when it started, not when you typed it.

  2. Let entries build up

    The card waits for at least 10 entries on 5 different days, so one rough week does not decide the answer for you.

  3. Read the comparison

    For example: 7 of 12 entries came within 24 hours of a major change, against 31% of the time overall. The card tells you whether that gap looks like a pattern or not yet.

A pattern is a correlation in your own entries, not a diagnosis. It can help you and your doctor talk about timing; it cannot tell you why a particular headache happened.

History screen with the Your pattern card above a list of recent headache, migraine and sinus pressure entries and the pressure at each

What the research says

A real link for some people, not a rule for everyone

A 2025 systematic review of 14 studies found that several linked pressure drops or rapid swings with more frequent migraine, fewer found a link with how severe attacks were, and none found one with how long they lasted. The authors called the evidence limited and inconsistent.

Single studies point in different directions. In a Japanese diary study, attacks clustered when pressure was 6–10 hPa below the 1013 hPa standard. A Berlin study of 100 people with migraine found weather sensitivity in a subgroup, but no significant link when all patients were pooled. Our guides walk through the details and the sources: pressure and headaches and how big a drop studies report.

Inside the app

What you see on your iPhone

Forecast card with an hourly pressure line for the next 48 hours and logged symptoms marked as dots
Hourly chart: 24 hours free, 48 with Pro
Pressure Alerts settings with Low, Medium, High and Custom sensitivity and a Morning briefing switch
Alerts and a morning briefing (Pro)
Log Symptom screen with eight symptom types, a severity slider at 5 of 10, the start time and a Took medication switch
Log a symptom in a few taps
Home Screen widget showing 1,009.0 hPa, a falling trend and a pressure drop expected tomorrow morning
Widgets for Home Screen and Lock Screen

Free and Pro

Start free, add Pro when you want the whole picture

The download is free and the tracker itself stays free. Pro is available as a weekly or yearly subscription or as a one-time lifetime purchase, and the App Store shows the price in your currency before you pay.

Free

  • Current pressure and trend
  • Hourly chart for the next 24 hours
  • Symptom log with all 8 types, severity, medication, notes and back-dating
  • Your last 7 entries
  • Past Pressure for 3 days or a week around now or any entry
  • One saved location
  • Home Screen and Lock Screen widgets
  • hPa, inHg and kPa

Pro

  • 48-hour chart and the Pressure Windows timeline
  • Your pattern card
  • Full history
  • Longer Past Pressure ranges and Go to Date
  • PDF and CSV export for appointments
  • Alerts for big changes and a morning briefing
  • More saved locations
  • Next big change on your widgets

Prices differ by country, so we do not list them here; you will see yours in the App Store.

Privacy

Your symptom log stays on your iPhone

Entries, severity scores, the medication switch and your notes are saved in a local database on your device. They are not uploaded to us or to anyone else, and the app does not ask for your name or email. Only small preferences, such as your unit and alert settings, sync through iCloud so your other devices pick them up.

To get pressure data, the app sends the coordinates of your current or saved location to Apple Weather. No symptom information goes with that request. The app has no third-party analytics or ads. Details are in the privacy policy.

Guides

Plain-language guides, with sources

What studies actually report about pressure and symptoms, and how to make your own records useful. You can also check the pressure chart for your location in the browser.

Questions

Where does the pressure data come from?

From Apple Weather. The app shows sea-level pressure, the value weather services publish, so you can compare it with your local forecast. Past Pressure goes back to October 2022 because older history for many places is less reliable.

Will the app tell me when I'm going to get a headache?

No, and we would be wary of any app that claims to. It shows what the pressure is doing and lets you see whether your logged symptoms tend to follow big changes. With Pro you can get a notification before a big change, which some people use to plan their day.

What counts as a big pressure change?

The app treats a change of 6 hPa (about 0.18 inHg) or more within 6 hours as a major change. Alerts let you choose how sensitive they are, from major swings only to a custom threshold.

Does it work on iPad and Apple Watch?

It runs on iPhone and iPad with iOS 17 or later. There is no Apple Watch app.

Is my symptom log uploaded anywhere?

No. Your entries stay in a local database on your device. Only preferences sync through iCloud. If you want to share your log with a doctor, Pro can export it as a PDF or CSV that you send yourself.

What does Pro cost?

Pro is offered weekly, yearly or as a one-time lifetime purchase. Prices vary by country, and the App Store shows yours before you buy. Everything in the Free column above keeps working without it.

See what the pressure is doing today

Free on the App Store for iPhone and iPad, in 38 languages.

Download on the App Store