48-hour migraine risk based on barometric pressure, humidity, and temperature changes in Fresno.
Fresno's Central Valley location creates a unique weather environment where tule fog in winter brings sustained high-pressure inversions. The valley's agricultural dust and extreme summer heat add environmental triggers beyond barometric pressure alone.
Worst season for migraines: November through March. Winter Pacific storms deliver most of Fresno's annual precipitation and pressure variability. The Central Valley's geography traps cold, dense fog called Tule fog from November through February, creating weeks of stagnant, poor-visibility conditions with associated pressure inversions.
Common triggers in Fresno: Tule fog temperature inversions trapping pollutants, winter Pacific storm frontal passages, agricultural dust and particulate air pollution. Fresno sits in the heart of the San Joaquin Valley, a 250-mile trough between the Sierra Nevada and the Coast Ranges. This valley traps air pollution from agriculture and vehicle emissions under persistent winter inversions, creating some of the worst air quality in the nation. The Tule fog that blankets the valley for weeks at a time represents a sustained low-visibility, stagnant-air environment that compounds migraine triggers.
Typical pressure: Fresno averages 1013 hPa at rest, but storm systems can push readings down to 1001 hPa. Swings of 8-14 hPa over 24 hours are common during active weather and fall within the range most associated with pressure-triggered migraines.
Can Fresno weather trigger migraines?
Yes. Fresno experiences 8-14 hPa barometric pressure swings, and research shows pressure drops are one of the most common migraine triggers. The city's specific patterns include Tule fog temperature inversions trapping pollutants, winter Pacific storm frontal passages, agricultural dust and particulate air pollution.
What time of year are migraines worst in Fresno?
Migraine sufferers in Fresno typically report the highest attack frequency during November through March. This aligns with the period of greatest barometric volatility in the region.
How do I track migraine triggers in Fresno?
Use MigrAid to log your attacks with one tap. The app automatically records barometric pressure, temperature, and humidity at the time of each migraine, then finds patterns between your attacks and Fresno's weather conditions over time.
Loading live forecast for Fresno...