Today's barometric pressure in Atlanta, 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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Atlanta's position at the southern end of the Appalachian foothills creates orographic effects that influence local pressure patterns. The city's warm, humid climate means thunderstorm activity nearly year-round, with each storm bringing measurable pressure shifts.
Worst season for migraines: December and January. Atlanta's pressure drops come mostly with winter fronts crossing the Piedmont, peaking in January, when 42% of days see a 5 hPa drop. Spring brings powerful squall lines, while summer is very calm, at 6% of days or fewer in each summer month.
Common triggers in Atlanta: spring squall line passages, summer heat dome humidity, rapid autumn frontal changes. Atlanta's 1,000-foot elevation in the foothills of the Appalachians gives it slightly lower baseline pressure than coastal Southern cities. The city's position at the southern end of the mountain chain creates orographic effects that can intensify storms and pressure changes as systems move through.
Typical pressure: Atlanta averages 980 hPa at rest, measured at the city's own elevation rather than corrected to sea level, and storm systems can push readings down to 969 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: Atlanta ranks #79 of 100 in our 2026 U.S. Migraine Risk Index, where #1 is the most challenging city for weather-driven migraine.
Can Atlanta weather trigger migraines?
Yes. Atlanta 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 spring squall line passages, summer heat dome humidity, rapid autumn frontal changes.
What time of year are migraines worst in Atlanta?
In Atlanta the most barometrically volatile stretch of the year falls in December and January. 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 Atlanta?
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 Atlanta 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 Atlanta. The MigrAid app learns yours. It saves the barometric pressure, humidity and temperature with every migraine you log, shows whether Atlanta's swings really line up with your attacks, and alerts you when conditions match your own trigger history.