Why Seasonal Allergies Are Worse in 2026: Causes and Relief

Itchy eyes, nasal congestion, endless sneezing, and persistent fatigue are becoming the new norm for many. For those feeling that seasonal allergies are hitting harder this year, it is not just an impression; it is a documented reality.

In Quebec, experts are observing a particularly intense allergy season in 2026. This surge is driven by a volatile combination of milder temperatures, unpredictable spring patterns, and climate changes that are altering how plants and pollens behave.

A Shift in Pollination Timelines

Spring allergies traditionally began gradually toward the end of April. However, pollen seasons are now starting earlier and lasting significantly longer than in the past.

Canadian experts note that milder winters and rapid warm-ups encourage the early flowering of trees such as birch, maple, and alder. This results in pollen being released into the air sooner and in greater volumes.

The situation in Quebec is especially pronounced this year. MétéoMédia has explained that a late spring followed by a rapid temperature spike can trigger the simultaneous flowering of various plant and tree species, creating a pollen “explosion.”

Did You Know? In Quebec, pollen seasons have lengthened by approximately 20 days, and pollen concentrations have increased by about 20% in recent years.

The Impact of Climate Change

Scientists are increasingly linking global warming to the worsening of seasonal allergies. This is largely because plants thrive on CO2; higher atmospheric concentrations and longer warm seasons lead to increased pollen production.

this pollen may become more allergenic than it was previously. Data cited by Global News indicates that the total amount of pollen in Canada may have doubled over the last 25 years.

Expert Insight: Samantha Carter notes that the intersection of rising CO2 levels and shifting temperature patterns creates a compounding effect on public health. When biological triggers like pollen increase in both volume and potency, it may place unprecedented pressure on respiratory health systems.

New Sensitivities and Environmental Triggers

A surprising trend has emerged where individuals who never previously suffered from allergies are suddenly developing symptoms. Some residents in Quebec report experiencing the worst season of their lives, requiring antihistamines for the first time.

Allergists explain that prolonged exposure to pollen can increase the sensitivity of the immune system over time. Essentially, the longer and more intense the exposure, the more likely the body is to eventually react.

Certain days are more difficult than others due to weather patterns. Hot, dry, and windy conditions facilitate the movement of pollen through the air, while heavy rain may temporarily reduce symptoms.

Atmospheric pollution and smoke from forest fires can also exacerbate these symptoms by further irritating the respiratory tracts.

Management and Survival Strategies

To manage these symptoms, clinical nurse Martine Caron suggests consulting a pharmacist for over-the-counter antihistamines to control nasal and ocular reactions.

Pollen Season 2026: What the experts expect with Spring allergies in full swing

For nasal congestion, using a nasal rinsing device is recommended to clear mucus and debris from the sinuses. In cases of significant congestion, a nasal corticosteroid spray may be highly effective.

Itchy eyes may be relieved with simple artificial tears, though prescription eye drops are available if symptoms persist. For severe cases where allergies prevent normal functioning, a physician may propose desensitization therapy.

Looking Ahead

Given current trends, future allergy seasons could continue to expand in duration. More individuals may develop new sensitivities as pollen concentrations potentially remain high.

Public health responses may likely focus more on the combined impact of pollen and environmental irritants like forest fire smoke to help citizens navigate these increasingly volatile springs.

Frequently Asked Questions

Why is the 2026 allergy season so intense in Quebec?
It is caused by a combination of milder temperatures, unpredictable spring weather, and climate change, which can lead to a simultaneous “explosion” of pollen from various species.

Can people develop allergies if they never had them before?
Yes. Allergists suggest that prolonged and intense exposure to pollen can increase the immune system’s sensitivity over time, leading some people to develop symptoms later in life.

What are the recommended treatments for severe congestion and itchy eyes?
For congestion, nasal rinsing devices and nasal corticosteroid sprays are recommended. For itchy eyes, artificial tears can provide relief, while prescription drops are available for more severe cases.

Do you find that your seasonal allergies have changed in intensity over the last few years?