Research shows that climate change is at least partly to blame for the allergy season becoming increasingly worse, reports Forbes.

The new study, by USDA scientist Lewis Ziska and colleagues from 15 other countries, looked at airborne pollen data from 17 locations, spanning the entire globe, and stretching back an average of 26 years. The news isn’t good for allergy sufferers:

“Overall, the long-term data indicate significant increases in both pollen loads and pollen season duration over time.”

In other words, it’s a double whammy: we getting more pollen than ever before, and the allergy season last longer. Okay, not that much longer, only an average of one day. But if you have hay fever, every day is one too many.

To be fair, not every location experienced a significant increase in pollen.