Quebec Braces for Severe Allergy Season
- The onset of the 2026 allergy season in Quebec is coinciding with warnings that symptoms may be more severe for the population this year.
- Data from the Government of Quebec indicates that 1 in 5 people in the province suffer from seasonal rhinitis.
- Allergic reactions in Quebec typically occur during specific windows each year, depending on the type of plant releasing pollen into the air.
The onset of the 2026 allergy season in Quebec is coinciding with warnings that symptoms may be more severe for the population this year. Seasonal rhinitis, commonly known as hay fever, is an allergic reaction triggered by exposure to pollens, affecting a significant portion of the province’s residents.
Data from the Government of Quebec indicates that 1 in 5 people in the province suffer from seasonal rhinitis. Other reports, including a 2019 study by the Observatoire québécois de l’adaptation aux changements climatiques (OQACC), suggest that approximately one million people in Quebec experience related symptoms annually.
Pollen Cycles and Timing
Allergic reactions in Quebec typically occur during specific windows each year, depending on the type of plant releasing pollen into the air.
- March to June: Pollen from trees and shrubs.
- May to October: Grass pollen, including brome, bluegrass, hay, and turf.
- July to October: Ragweed pollen.
Ragweed is a particularly dominant allergen in the region. According to research published via the National Center for Biotechnology Information (NCBI), ragweed pollens are responsible for between 50% and 90% of rhinitis cases.
The Impact of Climate Change
Environmental shifts are altering the nature of allergy seasons in Quebec. Climate changes are extending the periods during which trees and plants produce pollen, which may lead to longer allergy seasons in the coming years.
Research indicates that the prevalence of seasonal allergic rhinitis among adults in Quebec has seen a marked increase over the last 30 years, with the condition affecting 17% of the adult population. In response, the Quebec government implemented the Stratégie québécoise de réduction de l’herbe à poux et des autres pollens allergènes in 2015 to reduce ragweed and other allergenic pollens through cooperation with landowners and municipalities.
Symptom Profile and Quality of Life
Seasonal rhinitis manifests through a variety of physical symptoms primarily caused by the inhalation of pollen. These include repeated sneezing, nasal congestion, a runny nose with clear and abundant phlegm, and tingling or itching of the ears, throat, and nose.
Ocular symptoms, known as conjunctivitis, are also common and may include:
- Watering and redness of the eyes.
- Itching of the eyes.
- Swelling of the eyelids.
- Purulent eye discharge.
individuals who already suffer from asthma may experience a worsening of their condition during these peak pollen periods. Some patients also report headaches.
Beyond physical symptoms, the condition can impact a person’s overall quality of life and performance at school or work. Reported side effects include irritability, fatigue, sleeping troubles, and problems with concentration.
Secondary Health Effects
Allergies can also influence other areas of health, including oral wellness. The use of antihistamines and other allergy medications can reduce saliva production, leading to dry mouth. This reduction in saliva increases the risk of bad breath and cavities, as saliva is necessary to wash away food particles and bacteria.
nasal congestion often leads to mouth breathing, which further dries out the oral cavity and can accelerate the buildup of plaque. Those with inflamed sinuses may also experience tooth pain or sensitivity, as the upper molars are located close to the sinus cavities.