Flare weather forecast: pressure changes near you

See the barometric pressure drops, temperature swings and humidity many people feel in their head and joints, for the next 3 days. Then get a heads-up before the big ones.

  • Free
  • No sign up
  • US zip codes
  • 7am email alerts

What to expect

About 10 seconds
We factor in
  • 24-hour barometric pressure change
  • daily temperature swing
  • humidity
  • the hourly forecast for your zip code
We'll ask
just your US zip code (or your location)
You get
a low, moderate or high flare-weather level for the next 3 days, a 72-hour pressure chart and optional 7am alerts

Check the next 3 days

US zip codes. Or use your location (rounded to about 1 km, never stored).

Get a heads-up before big pressure changes

One email at 7am, only on days a big change is coming. Weather only: we never ask about your health.

How sensitive are you to weather changes?

We'll send a link to confirm first. See our privacy policy.

Heylixir app icon

Does pressure really affect you?

Heylixir lines up your own symptom logs with the weather, so you can see whether pressure changes are one of your triggers. Log how you feel by voice in seconds.

  • Voice check-ins
  • Weather vs symptoms
  • Flare patterns
Download on the App Store Get it on Google Play

How it works

  1. Enter your zip code

    Or use your location. We look up the hourly forecast for the next 3 days.

  2. See each day’s level

    Low, moderate or high, with the reasons in plain words and a 72-hour pressure chart.

  3. Get a heads-up

    Choose your sensitivity and we’ll email you at 7am before a big change.

Barometric pressure and pain

Barometric pressure is the weight of the air around us. It drops before storms and rises as weather clears. Many people with migraine, arthritis, fibromyalgia, lupus and Ehlers-Danlos syndrome say they can "feel the weather coming", often with headaches, joint pain or fatigue.

On a high day

  • Keep your plans flexible and your medication close.
  • Drink water, eat regularly and protect your sleep.
  • Plan rest before you need it. The spoon planner can help.

Not sure weather is a trigger for you? Track your flares and triggers for a few weeks and the pattern usually shows.

More free tools

Explain my chronic illness →Make a card that explains your condition to family, friends or your boss, plus a link they can open.Spoon planner →Budget your spoons, add times if you like and share a picture of your day.Accommodation letter →Draft a request for work or school accommodations in a few minutes, ready to send.Doctor visit prep →Turn what you want to say into a one-page summary to print or show at your appointment.

Frequently asked questions

Many people with migraine, arthritis, fibromyalgia and other chronic conditions report that changes in air pressure, temperature or humidity make symptoms worse. Research results are mixed and it varies a lot between people, which is why tracking your own symptoms alongside the weather is the best way to find out if it affects you.
Each day gets points for the biggest 24-hour change in air pressure (3, 6 and 10 hPa or more), a temperature swing of about 22°F (12°C) or more, and humidity above 85%. Low, moderate and high are based on those points. It describes the weather, not your body.
A change of about 5 to 10 hPa (0.15 to 0.30 inHg) within 24 hours is a noticeable shift, often ahead of a storm front. Changes above 10 hPa are large.
One email at 7am local time, only on days a change at or above your chosen level is coming in the next 36 hours, and never twice for the same change. We store your email, zip code and sensitivity, nothing about your health. Every email has a one-tap link to stop.
Zip code search is US-only for now. "Use my location" works anywhere, but email alerts need a US zip code.
No. It is weather information. If your symptoms change or worsen, talk to your clinician. To see whether weather is one of your triggers, try flare-up trigger tracking.