Today's barometric pressure in Prescott, 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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Prescott sits at 1,638 metres in the central Arizona highlands, where ponderosa forest replaces desert. Its worst month is April rather than midwinter, an unusual pattern driven by the spring wind season that sweeps the Colorado Plateau transition zone.
Worst season for migraines: April, then January and February. Spring stands out here because that is when Pacific systems crossing the plateau generate the strongest and most frequent wind events. Winter contributes its share, but the April peak is distinctive among Arizona cities.
Common triggers in Prescott: spring wind season across the plateau transition, monsoon convection over the highlands, low baseline pressure at 1,638 metres. Prescott sits on the Mogollon Rim transition, high enough for real winters yet south enough to catch monsoon moisture, which gives it two separate active seasons. The mile-high elevation keeps baseline pressure near 839 hPa, so even modest systems register clearly against a low starting point.
Typical pressure: Prescott averages 839 hPa at rest, measured at the city's own elevation rather than corrected to sea level, and storm systems can push readings down to 826 hPa. Swings of 6-8 hPa over 24 hours are common during active weather and fall within the range most associated with pressure-triggered migraines.
2026 index: Prescott is not one of the 100 metros ranked in our 2026 U.S. Migraine Risk Index, which shows how they compare.
Can Prescott weather trigger migraines?
Yes. Prescott experiences 6-8 hPa barometric pressure swings, and research shows pressure drops are one of the most common migraine triggers. The city's specific patterns include spring wind season across the plateau transition, monsoon convection over the highlands, low baseline pressure at 1,638 metres.
What time of year are migraines worst in Prescott?
In Prescott the most barometrically volatile stretch of the year falls in April, then 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 Prescott?
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 Prescott 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 Prescott. The MigrAid app learns yours. It saves the barometric pressure, humidity and temperature with every migraine you log, shows whether Prescott's swings really line up with your attacks, and alerts you when conditions match your own trigger history.