Today's barometric pressure in Indianapolis, 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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Indianapolis sits in the heart of the Midwest where weather systems from the Rockies, Gulf, and Great Lakes converge. This three-way intersection of air masses makes the city particularly prone to rapid barometric pressure swings.
Worst season for migraines: November through April. Indianapolis sits at the crossroads of major storm tracks where systems from the Rockies, Gulf Coast, and Great Lakes converge. Pressure drops are most frequent from November through April across the flat central Indiana landscape, peaking in March, when 63% of days see a 5 hPa drop. Summer is far calmer, at 16% of days or fewer.
Common triggers in Indianapolis: strong cold front passages from the northwest, spring severe thunderstorm development, winter ice storm pressure gradients. Indianapolis occupies the flat central Indiana plain with no topographic barriers to incoming weather systems. The White River basin provides minimal terrain variation, meaning the city gets the full force of every frontal passage without any natural sheltering. The convergence of weather from the Great Lakes, the Gulf, and the Plains makes Indianapolis one of the more barometrically active cities in the eastern US.
Typical pressure: Indianapolis averages 992 hPa at rest, measured at the city's own elevation rather than corrected to sea level, and storm systems can push readings down to 976 hPa. Swings of 6-14 hPa over 24 hours are common during active weather and fall within the range most associated with pressure-triggered migraines.
2026 index: Indianapolis ranks #44 of 100 in our 2026 U.S. Migraine Risk Index, where #1 is the most challenging city for weather-driven migraine.
Can Indianapolis weather trigger migraines?
Yes. Indianapolis experiences 6-14 hPa barometric pressure swings, and research shows pressure drops are one of the most common migraine triggers. The city's specific patterns include strong cold front passages from the northwest, spring severe thunderstorm development, winter ice storm pressure gradients.
What time of year are migraines worst in Indianapolis?
In Indianapolis the most barometrically volatile stretch of the year falls in November through April. 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 Indianapolis?
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 Indianapolis 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 Indianapolis. The MigrAid app learns yours. It saves the barometric pressure, humidity and temperature with every migraine you log, shows whether Indianapolis's swings really line up with your attacks, and alerts you when conditions match your own trigger history.