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Migraine weather forecast for today

Today's migraine risk depends on how fast barometric pressure is falling near you — not on rain or clouds. This page reads the next 48 hours of pressure for your location and flags any drop that crosses the 6–10 hPa trigger threshold.

Reading pressure forecast for your location…

Get the drop alert before the attack

This page shows today. Migra watches every day — it reads pressure with your iPhone's built-in barometer, learns the exact drop that precedes your attacks from your log, and sends an alert hours before the trigger window. People who know their threshold can take abortive medication early instead of reacting late.

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How to read today's headache forecast

Ignore the absolute number — 1005 hPa on a stable day is safer than 1015 hPa at the start of a steep fall. What predicts attacks is the rate of change: the chart above highlights the worst 24-hour fall in the forecast. Under 3 hPa is background noise for most people. 3–5 hPa matters if you're highly sensitive. 6–10 hPa is the band most studies associate with attack onset, and it's where the badge turns red.

The mechanism, the studies behind the threshold, and why the same storm doesn't always trigger the same person are covered in the full guide: how much barometric pressure drop triggers a migraine?

Falling pressure is one trigger — stacking is the multiplier

A pressure drop you'd normally shrug off can tip into an attack when it lands on short sleep, a skipped meal, or a hormonal window. On high-risk days, controlling the triggers you can control buys you margin. See the top 30 migraine triggers ranked by real-world frequency — weather sits near the top, but it rarely acts alone.

Can an app really forecast migraines?

A weather service can forecast pressure two days out with good accuracy. Whether that becomes your migraine depends on a personal threshold no forecast site can know — which is why generic "migraine weather maps" disappoint. The honest workflow: log attacks against pressure data until your threshold is visible (usually 20–30 logged attacks), then treat any forecast fall beyond it as an action signal. The tradeoffs are covered in can a migraine weather forecast app actually predict your next attack?

Migraine forecast FAQ

Is the barometric pressure causing headaches today?
Check the live chart above: if pressure near you falls 6–10 hPa within 24 hours, pressure-sensitive people are at elevated migraine risk. Highly sensitive sufferers can react to drops as small as 3–5 hPa.
What barometric pressure causes headaches?
It's the change that matters, not the number. Research points to drops of 6–10 hPa within 24 hours as the most common trigger threshold. Standard sea-level pressure is 1013 hPa; storm systems can fall below 1000 hPa.
Can weather really trigger migraines?
Yes, for a large subset of sufferers. Kimoto et al. (2011) found migraine frequency rose when pressure fell more than 5 hPa versus the following day; Okuma et al. (2015) identified 6–10 hPa drops below the 1013 hPa baseline as the peak-risk range.
How accurate is a migraine weather forecast?
Pressure forecasts themselves are reliable ~48 hours out. What varies is your personal threshold — some people react at 3 hPa, others tolerate 15+. Logging attacks against pressure data is how you find your own number.
Does this forecast use my exact location?
It starts from your approximate network location and never stores it. Tap "use precise location" to switch to your device's GPS position — the request goes straight from your browser and is used only for that one forecast.

Sources: Kimoto et al., 2011 · Okuma et al., 2015 · forecast data MET Norway Locationforecast (CC BY 4.0). This page is informational and not medical advice.