A barometric pressure headache occurs when changes in weather—especially drops in air pressure before a storm—affect the pressure balance in your sinuses and inner ear. This can trigger pain either as a dull, pressure-like sinus headache or a throbbing migraine. Symptoms often include head pressure, pain behind the eyes or forehead, and sometimes sensitivity to light or nausea. These headaches typically start hours to a day before weather changes and improve once conditions stabilize. Treatment focuses on hydration, over-the-counter pain relievers like Ibuprofen, and managing sinus or migraine symptoms.