Pollen & Allergy Season

The dreaded allergy season is upon us and climate change will only make it worse for allergy and asthma sufferers. 

Rising temperatures from human-induced climate change are the dominant contributor to recent changes in the timing and length of the pollen season in North America. Over the last half-century, the growing season (and the pollen season) lengthened in 82% of the cities Climate Central analyzed.

The amount of carbon dioxide in the atmosphere also directly impacts pollen concentrations because it can stimulate plant growth. As carbon dioxide levels rise due to the burning of fossil fuels, pollen concentrations will increase and the allergy season will worsen.

Seasonal allergies can have serious consequences for those with respiratory problems like asthma. A longer allergy season and higher pollen concentrations will put a burden on the most vulnerable populations, including lower-income and minority communities.