Today's barometric pressure in Boston, a 48-hour pressure chart, and a risk score for weather-triggered migraine and headache, based on pressure drops, humidity, and temperature changes.
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Boston sees significant barometric pressure swings in spring and fall, making it one of the more migraine-trigger-prone cities in the Northeast. Nor'easters can drop pressure rapidly over hours, and the city's coastal position amplifies the impact of Atlantic weather systems.
Worst season for migraines: September through June. Boston's extended storm season runs from fall nor'easters through winter blizzards and into spring coastal lows. The city averages 10-15 significant pressure events per season, with nor'easters capable of dropping pressure 20+ hPa over 24 hours.
Common triggers in Boston: nor'easter pressure bombs, rapid freeze-thaw temperature cycles, coastal fog and humidity shifts. Boston's harbor location amplifies the impact of Atlantic storms. The city sits at the convergence of the cold Labrador Current and warm Gulf Stream influences, creating sharp temperature gradients offshore that fuel intense storm development right at the city's doorstep.
Typical pressure: Boston averages 1015 hPa at rest, measured at the city's own elevation rather than corrected to sea level, and storm systems can push readings down to 993 hPa. Swings of 8-19 hPa over 24 hours are common during active weather and fall within the range most associated with pressure-triggered migraines.
2026 index: Boston ranks #7 of 100 in our 2026 U.S. Migraine Risk Index, where #1 is the most challenging city for weather-driven migraine.
Can Boston weather trigger migraines?
Yes. Boston experiences 8-19 hPa barometric pressure swings, and research shows pressure drops are one of the most common migraine triggers. The city's specific patterns include nor'easter pressure bombs, rapid freeze-thaw temperature cycles, coastal fog and humidity shifts.
What time of year are migraines worst in Boston?
In Boston the most barometrically volatile stretch of the year falls in September through June. That is when weather is most likely to play a part, if weather is a trigger for you at all. See when migraine weather season starts across the U.S.
Is there a barometric pressure headache forecast for Boston?
This page works as one. Many people call a headache that arrives with a weather change a barometric pressure headache, and this forecast tracks the pressure drops, humidity and temperature swings behind that idea. The score covers the next 24 hours in Boston and the chart shows the next 48. It is built on migraine research, so treat it as a rough guide for other headaches. A sudden, severe headache needs urgent medical care, whatever the weather.
Your own forecast
This page shows the weather risk for everyone in Boston. The MigrAid app learns yours. It saves the barometric pressure, humidity and temperature with every migraine you log, shows whether Boston's swings really line up with your attacks, and alerts you when conditions match your own trigger history.