Nasal congestion worsens when it rains? That's expected. Weather is a common allergy trigger. The connection between your symptoms and the weather depends on what you’re allergic to.

What triggers these symptoms

Many people with allergic asthma find that cold air is a problem, especially when they exercise outside. It can trigger a coughing fit.

Air pollution is worst on hot summer days. Ozone and smog can be a serious trigger for people with allergic asthma.


Rising temperatures caused by climate change lead to longer allergy seasons and worsen air quality. Long allergy seasons can cause more allergies and asthma attacks.44

Who is at risk from becoming sick

The genetic characters of allergic rhinitis

A genetic background in terms of a family history of atopic disease has been the strongest risk factor for the development of allergic symptoms, irrespective of the varying prevalence and environmental risk factors in different societies.

Environmental factors

Environmental factors such as increased air pollution, changed lifestyle, and decrease in bacterial/viral infection are frequently quoted as adjuvant factors for allergic sensitization and possible causes of the increased prevalence.

Protective effect of infections on atopy – “hygiene hypothesis”

During the past decade, the simulative question of why atopic diseases are increasing in prevalence, which is inversely proportional to the prevalence of communicable diseases, is due to the improvement of healthcare policy and hygiene standard.

Exposure to air pollution

In addition to previously described allergens, exposure to high levels of pollutants including oxides of nitrogen, ozone, sulfur dioxide, black smoke– large particulate matter, small particulates, carbon monoxide, and volatile organic compounds have been considered as important contributing factors in both exacerbation and etiology of allergic airway diseases.45

Precautions to take during a weather change

There's no way to avoid the weather. But you can work around it and reduce your allergy symptoms.

Stay indoor:

Pay attention to the weather. Check mold counts. Watch for Ozone Action Days. Spend less time outside when you're likely to have problems.44

Use face masks:

Masks act as filters and helps in filtering various allergens and dust particles.46

Use air purifier:

Use it to prevent allergy symptoms by removing mold spores, dust, tobacco particles and other allergens.47

Stay hydrated:

Once your body is dehydrated, the histamine production increases, which causes the body to have the same trigger symptoms as seasonal allergies. Drinking plenty of water will help prevent the higher histamine production and alleviate the allergy symptoms.48


If you have the allergy at the same time every year- and cannot avoid it, get ahead of it. Ask your doctor if you can start taking allergy drugs about 2 weeks before you usually start sneezing, coughing, or itching. That way, you can stop them before they stop you. Over-the-counter decongestants, such as Telfast D and antihistamines, such as Telfast and combination medications containing Acetaminophen, Triamcinolone acetonide, Diphenhydramine, and Phenylephrine prescription medications, such as steroid nasal sprays.49 Telfast 180 is an effective antihistamine to alleviate the allergy related symptoms including allergic rhinitis and urticaria.


44. Last visited on 15th July 2021

45. Last visited on 15th July 2021

46. Last visited on 15th July 2021

47. Last visited on 15th July 2021

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49. Last visited on 15th July 2021