Air Pollution and Heat: Common Triggers for Migraines

New research strengthens the link between air pollution and migraine attacks, showing that exposure to certain pollutants and weather patterns significantly increases the risk of seeking emergency care for migraines.

A study published in Neurology on April 15, 2026, followed 7,032 people in southern Israel over an average of 10 years, tracking daily levels of airborne pollutants like nitrogen dioxide (NO₂) and particulate matter (PM2.5), along with weather conditions. Researchers found that on days when air quality worsened, hospital visits for acute migraines increased.

Specifically, people exposed to sudden spikes in NO₂ were 41% more likely to seek emergency care for a migraine. High levels of solar radiation and UV rays increased the risk of visits by 23%. The fewest medical visits occurred on days with lower-than-average pollution levels.

Individuals with ongoing exposure to high levels of NO₂ were 10% more likely to have high use of migraine medications, such as triptans, compared to those without such exposure. Similarly, people with ongoing exposure to high levels of PM2.5 were 9% more likely to have high use of these medications.

Dr. Ido Peles of Ben-Gurion University of the Negev in Israel, who led the study, said the results help explain how and when migraine attacks occur, particularly in relation to environmental triggers.

The findings suggest that climate change, which increases the frequency of heat waves and dust storms, could contribute to a rise in migraine cases in polluted areas.

Previous research has also indicated that short- and long-term exposure to air pollution is linked to severe migraine attacks, with weather conditions like heat and humidity amplifying these effects.

Lower temperatures may trigger more migraine attacks in colder climates for some individuals, though this effect varies by population and region.

Experts recommend that people who suffer from migraines consider monitoring air quality reports alongside tracking sleep, stress, and diet to better manage their condition.