Today's barometric pressure in Birmingham, 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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Birmingham's location in the Deep South means year-round humidity and frequent thunderstorm activity. The city sits in a secondary tornado alley, and spring squall lines crossing Alabama bring intense but brief pressure drops that can trigger migraines.
Worst season for migraines: January and February. Birmingham sits in Dixie Alley, the Southeast's tornado corridor, where spring storms can be as violent as anywhere in the Great Plains. Day-to-day pressure drops are most frequent earlier, in January and February, peaking in January, when 45% of days see a 5 hPa drop. Summer is far calmer, at 2% of days or fewer.
Common triggers in Birmingham: Dixie Alley severe thunderstorms and tornadoes, Gulf moisture surges through the Alabama river valleys, summer heat dome humidity exceeding 90%. Birmingham sits in the Jones Valley at 600 feet elevation, flanked by Red Mountain and Shades Mountain ridges of the southern Appalachian foothills. These parallel ridges channel weather through the valley and can enhance storm development through orographic lift. The Black Warrior River basin to the west and Cahaba River basin to the south provide moisture corridors that feed severe weather events.
Typical pressure: Birmingham averages 996 hPa at rest, measured at the city's own elevation rather than corrected to sea level, and storm systems can push readings down to 985 hPa. Swings of 4-9 hPa over 24 hours are common during active weather and fall within the range most associated with pressure-triggered migraines.
2026 index: Birmingham ranks #80 of 100 in our 2026 U.S. Migraine Risk Index, where #1 is the most challenging city for weather-driven migraine.
Can Birmingham weather trigger migraines?
Yes. Birmingham experiences 4-9 hPa barometric pressure swings, and research shows pressure drops are one of the most common migraine triggers. The city's specific patterns include Dixie Alley severe thunderstorms and tornadoes, Gulf moisture surges through the Alabama river valleys, summer heat dome humidity exceeding 90%.
What time of year are migraines worst in Birmingham?
In Birmingham the most barometrically volatile stretch of the year falls in January and February. 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 Birmingham?
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 Birmingham 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 Birmingham. The MigrAid app learns yours. It saves the barometric pressure, humidity and temperature with every migraine you log, shows whether Birmingham's swings really line up with your attacks, and alerts you when conditions match your own trigger history.