Weather is Making Allergy Season Worse

Weather is Making Allergy Season Worse

Climate Change and Pollen Allergies

  • Pre-1990s: Allergy seasons and pollen levels are within historical norms.
  • 1990s: Research indicates that ragweed pollen monitoring has been taking place at 11 locations in the central US and Canada since this decade as part of a national allergy monitoring network.
  • 1990-2018: Research by William Anderegg finds approximately a 21% increase in overall pollen concentrations in North America.
  • Since the Beginning of the 20th Century: The contiguous U.S. has experienced an increase of more than two weeks on average in the frost-free season.
  • Since the 1970s: The frost-free season has expanded by an average of at least 11 days in all nine of the U.S.'s distinct climate regions.
  • 1995: The US EPA begins tracking changes in ragweed pollen season length at 11 locations in the central United States and Canada.
  • 1995-2015: Analysis of ragweed pollen season data shows a lengthening of the season at 10 of the 11 studied locations, with more pronounced increases at higher latitudes. Winnipeg, Manitoba, sees the largest increase at 25 days.
  • 2011: A study estimates the economic impact of medically treating seasonal allergies in the United States to be $3.4 billion annually.
  • 2016: A study in Sweden analyzes the economic impact of allergic rhinitis, estimating an impact of about $1.43 billion in Sweden alone due to presenteeism, absenteeism, and medical treatment.
  • 2018: A study notes only 85 pollen stations operating in the U.S., highlighting a need for more comprehensive monitoring.
  • 2019: The Asthma and Allergy Foundation of America reports that ragweed pollen allergy affects an estimated 15.5 percent of all Americans.
  • 2019: An EPA study estimates that between 35,000 and 60,000 asthma-related emergency department visits were linked to pollen, projecting a potential 14% increase by 2090.
  • Early 2020s (anecdotal): Allergists report an increase in patients seeking treatment for seasonal allergies.
  • 2021: The CDC begins collecting data on the prevalence of seasonal allergies.
  • April 19, 2023: Samantha Harrington publishes an article in Yale Climate Connections highlighting research by William Anderegg and Brooke Lappe on the impact of climate change on worsening pollen allergies.
  • March 18, 2025: Kasha Patel publishes an article in The Washington Post detailing the "allergy capitals" of the U.S. for the previous year (2024), based on data from the Asthma and Allergy Foundation of America. Wichita, Kansas, is ranked the most challenging city.
  • April 9, 2024: Bridget Balch publishes an article in AAMC News discussing how warmer temperatures and "botanical sexism" are exacerbating seasonal allergies.
  • By 2050 (projected): Some computer models suggest that climate change could significantly increase airborne pollen loads, even in areas that currently have low loads.
  • Ongoing: Climate change continues to cause warmer temperatures, longer frost-free seasons, increased carbon dioxide levels, and altered precipitation patterns, all contributing to longer and more severe pollen seasons and worsening allergy symptoms.

Episoder(208)

Florida Expecting Impact from Hurricane Milton with Dangerous Storm Surge and 110 mph Winds

Florida Expecting Impact from Hurricane Milton with Dangerous Storm Surge and 110 mph Winds

Tropical Storm Milton is another rapidly developing tropical disturbance in the Gulf of Mexico that is expected to strengthen into Hurricane Milton and make landfall on the West Coast of Florida as a Category 2 hurricane around Wednesday. The forecast emphasizes the potential for significant storm surge and heavy rainfall, urging residents of Central and South Florida to stay informed and prepared. While the exact path and intensity of the storm are uncertain, remember that the effects can be for reaching from the center of the storm at landfall. There's also the increasing likelihood of a dangerous storm surge event along Florida's Gulf coast with some areas to be impacted already having been by hurricane Helene just a short time ago.

5 Okt 202413min

Growing Insurance Failures Take Spotlight After Hurricane Helene

Growing Insurance Failures Take Spotlight After Hurricane Helene

Hurricane Helene is a major disaster that highlights the growing economic risks associated with climate change. While the financial impact of the hurricane is significant, with estimates reaching over $100 billion with long-term implications for communities, businesses, and individuals. Climate change will increasingly lead to "known unknowns" - events that we know will happen but cannot predict their exact timing or location. Adaptation, investing in preventative measures, and the need for governments and companies to take proactive steps to mitigate the financial and social consequences of these events is vital to move forward.Suggested questions

5 Okt 20246min

Hurricane Helene’s Toxic Flood Waters

Hurricane Helene’s Toxic Flood Waters

There’s a hidden danger of toxic chemical releases from industrial facilities during hurricanes. Limited disclosure requirements and insufficient public information about these risks leave communities unprepared and unaware of the potential consequences. Red tide has been detected in Pinellas County waters following Hurricane Helene. This poses an additional health risk for residents already dealing with storm damage and cleanup, as red tide can cause respiratory problems and potentially harm marine life.

4 Okt 20247min

Hurricane Helene - HAARP Engineered and Steered to Wipe Out a Town

Hurricane Helene - HAARP Engineered and Steered to Wipe Out a Town

Conspiracy theories circulate about Hurricane Helene, which struck Florida in September 2024 and wreaked havoc upon upstate North Carolina. Some theories claim the hurricane was intentionally manipulated to impact Republican areas, while others suggest it was engineered to clear land for lithium mining. We also examine theories claiming the hurricane was created or guided by technology, such as HAARP, frequency transmitters, or cloud seeding. While lithium is on the mind of conspiracy theorist, a real life quartz mining facility has been severely impacted by Helene, which could cause supply chain disruptions for weeks or months.

4 Okt 202410min

Hurricane Ian: Investigation Shows Homeowners Insurance Companies Not Paying Up After 2 Years

Hurricane Ian: Investigation Shows Homeowners Insurance Companies Not Paying Up After 2 Years

A 60 Minutes report on insurer fraud in Florida following Hurricane Ian shows that numerous companies have systematically changed reports in order to deny homeowners of up to 90% of the payment they deserve after catastrophic losses. It focuses on the claims of several licensed adjusters, who allege that insurance carriers were purposefully altering damage reports to reduce payouts to homeowners. These adjusters claim that their reports were edited by desk adjusters who had never even visited the damaged properties, reducing the amount of money the homeowners received. The report alleges that this practice was widespread, affecting many homeowners who were left with significant damage and insufficient funds to repair their homes… and are still awaiting justice even today. While these charges have been presented to the Florida Attorney General’s office, they have failed to prosecute 2 years after Ian struck Southwest Florida in 2022.

3 Okt 202411min

Asheville - Climate Change “Safe Haven”?

Asheville - Climate Change “Safe Haven”?

We explore the devastating floods that hit Asheville, North Carolina, after Hurricane Helene, challenging the city's former reputation as a "climate haven." It explains that climate change is making intense rainfall events more frequent and severe, leaving even high-elevation areas vulnerable. Climate change is exacerbating flooding risks across the United States, including in Appalachia, where the terrain amplifies the impact of heavy rains. We also compare the recent floods to the "Great Flood" of 1916, highlighting the catastrophic devastation caused by heavy rainfall and emphasizing the historical context of similar events in the region. Damage from Helene is extensive, causing significant problems with infrastructure and prompting relief efforts as the full extent of the impact still remains unknown.

3 Okt 202410min

What’s Your Flood Risk? Tools to Help you Determine

What’s Your Flood Risk? Tools to Help you Determine

How to determine flood risk for properties in the United States. Yale Climate brings us tools and resources, categorized by the type of information they provide, and it critiques the accuracy and limitations of each. These tools are essential in an era of increasing flood risk due to climate change. We discuss the new Risk Rating 2.0 system implemented by the National Flood Insurance Program, which aims to ensure future payouts do not exceed premiums.

3 Okt 202411min

Hurricane Helene - Bomb after the Lull

Hurricane Helene - Bomb after the Lull

The 2024 Atlantic Hurricane season began as a beast with Hurricane Beryl setting the stage for what was predicted to be an overactive hurricane season. With an August and early September peak season lull, forecasters were questioning the reasoning for the season bottoming out. Then intro Hurricane Helene. Hurricane Helene made landfall in Florida as a category 4 hurricane with maximum sustained winds of 140 mph and a storm surge of 20 feet causing not only one of the highest surges seen in the state of Florida, but also some of the highest storm surge ever recorded in the Tampa Bay Area. As a weakening storm system, Helene continued to dump excess amounts of rain through parts of Georgia and Appalachia, causing serious flash flooding that has caused the death toll to spike in recent days as rescuers scramble to sift through the destruction. Some people are wondering how a warming climate may have been a factor in supercharging Helene

3 Okt 202411min

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