Allergy season generally occurs throughout much of the year, with different allergens peaking in different seasons:

• Spring allergy season typically starts as early as February and lasts through June, dominated mainly by tree pollen like oak, maple, birch, and cedar.
• Summer allergy season peaks in May through July with grass pollen being the main trigger.
• Fall allergy season begins in August and can last until November, with weed pollens such as ragweed being the primary cause.
• Winter allergy symptoms are usually caused by indoor allergens like dust mites, pet dander, and mold, as outdoor pollen levels are lower.

The exact timing and severity of allergy seasons can vary depending on geographic location, climate, and environmental factors such as warmer winters and rainfall. For example, milder winters may cause allergy seasons to start earlier, and the duration may be extended with climate change effects. Regions such as the Southeast US experience earlier and longer allergy seasons compared to colder areas like the Northeast or Midwest.

In summary:

• Spring: February to June (tree pollen)
• Summer: May to July (grass pollen)
• Fall: August to November (weed pollen, especially ragweed)
• Winter: Year-round indoor allergens (dust, mold, pet dander)

This timeline helps allergy sufferers anticipate symptoms and prepare their treatment accordingly.