Allergy season is starting earlier and lasting longer across the United States, with pollen levels significantly higher than in previous decades. This shift is not just a seasonal inconvenience but a direct consequence of climate change, impacting millions who suffer from allergic reactions and asthma. The growing season for plants has expanded due to warmer temperatures, meaning more time for pollen production and a more severe impact on allergy sufferers.
The Rising Toll of Pollen
Research shows that the period between the last freeze and the first freeze has lengthened, giving plants a longer window to generate pollen. This means allergy seasons are no longer confined to spring and fall; they are stretching out, overlapping, and becoming more intense. Pollen counts have risen by approximately 20%, exacerbating symptoms like sneezing, coughing, and watery eyes. The effects are not uniform: some regions, like the Northwest, have seen the most dramatic increases, with growing seasons extending by 31 days since 1970.
Regional Variations and Forecasts
While some areas are experiencing a delayed start due to colder temperatures (Georgia, the Carolinas, and Virginia), experts warn that this relief may be temporary. The Ohio Valley is expected to be hit particularly hard this year, while the Northwest will see some of the largest increases in pollen levels. AccuWeather forecasts predict a late spring frost might only postpone the inevitable surge in pollen later in the season.
Climate Change as the Primary Driver
The underlying cause of this shift is clear: climate change. As Kristy Dahl, PhD, vice president for science at Climate Central, explains, “It’s a clear signal of a warming world, driven by carbon pollution.” Increased carbon dioxide in the atmosphere acts as fertilizer for plants, leading to higher pollen production. Reducing fossil fuel emissions is crucial to mitigating the problem.
Preparing for a Prolonged Season
Medical professionals emphasize the need for proactive allergy management. Juanita Mora, MD, an allergist with the Chicago Allergy Center, advises allergy and asthma sufferers to get their symptoms under control before pollen levels peak. Nana Mireku MD, a pediatric allergist with TexasAllergyMD, recommends starting medications (antihistamines, nasal sprays, inhalers) two to three weeks before the typical start of allergy season in their region.
Practical tips for managing symptoms include:
– Keeping windows closed during sleep and travel
– Showering and changing clothes after extended outdoor exposure
– Monitoring local pollen forecasts
– Consulting an allergist for testing and targeted treatment
– Using saline rinses, nasal steroid sprays, and antihistamines
Allergen immunotherapy (allergy shots or sublingual tablets) can also provide long-term relief. Prolonged allergy seasons can worsen conditions like asthma and eczema, making preparation essential.
The situation is unlikely to improve in the short term: grass pollen will follow tree pollen, and ragweed storms will dominate the fall. Allergy sufferers should expect a long season of discomfort ahead.
