Is it allergy season in New York?

New York's allergy season is all about extremes. The spring is short but vicious — birch, maple, and oak all peak simultaneously in April and May, leaving little relief. Then summer offers a clearer window before ragweed dominates August through October, with New York City experiencing the worst counts in the entire state thanks to its urban heat island that arrives pollen weeks earlier than rural areas.

New York is geographically diverse. The urban island heat of NYC creates a different season than the cooler North Country, and the Hudson Valley sits between them. The Adirondacks have the shortest allergy season in the state. Each zone gets hit at slightly different times.

NYC Metro

Urban heat island accelerates everything 2–3 weeks

The five boroughs plus Long Island sit in one of the most intensely paved urban environments in the US. That concrete and asphalt heat up fast in spring, warming the air and triggering tree pollen to release weeks before rural areas. Birch and maple hit hard in March, oak follows through May, and ragweed — fueled by the same heat — dominates August through October.

Birch · Mar–Apr Oak · Apr–May Ragweed · Aug–Oct Heat island effect

Hudson Valley

Moderate season, 1–2 weeks behind NYC

The river corridor runs north-south and can trap pollen on calm days, but the elevation and water moderation keeps spring pollen 1–2 weeks behind the city. Oak-heavy April and May followed by a solid ragweed season. The valley's topography can concentrate pollen in narrow corridors, so local microclimates matter more than you'd expect.

Oak · Apr–May Ragweed · Aug–Oct River moderation Topographic trapping

Western New York

Great Lakes moderate the season 2–3 weeks

Buffalo sits on Lake Erie and Rochester on Lake Ontario. These massive water bodies suppress early spring warming, delaying tree pollen by 2–3 weeks compared to NYC. Spring is compressed, but when it arrives, it arrives hard. Lake effect snow in winter can actually intensify the rebound pollen burst in May when the lakes finally warm.

Oak · May Grass · Jun–Jul Lake effect moderation Short, intense spring

Adirondacks / North Country

Shortest season in the state — May through October only

High elevation and northern latitude mean the season doesn't really start until May, and by October most pollen has cleared. Winter can last into April, which delays every spring-blooming plant. Ragweed exists but is less intense than downstate. This is the closest thing to an allergy relief zone in New York.

Season starts May Ends October High elevation delay Oct–Apr clear

Each row shows a full year of pollen for one region — trees in blue, grasses in green, weeds in amber. Look for where all three rows go quiet at the same time — that's your window.

Oral Allergy Syndrome (also called pollen-food allergy syndrome) causes tingling or mild itching in the mouth when you eat certain raw foods during the relevant pollen season. The proteins in the food are similar enough to the pollen protein that your immune system cross-reacts. Cooking usually deactivates the offending protein, so the same food cooked may cause no reaction.

Birch & Oak pollen

Stone fruits & apples

Apples, peaches, cherries, plums, pears, almonds, hazelnuts, carrots, celery

Peak risk April–May in New York, especially in NYC where the season arrives early. Peeling fruit helps — most of the cross-reactive protein is in the skin.

Grass pollen

Tomatoes, potatoes & melons

Tomatoes, potatoes, kiwi, watermelon, cantaloupe, oranges (in some cases)

Peak risk May–July across New York. Upstate sufferers notice this when early summer grass counts spike.

Ragweed / Plantain

Melons & bananas

Watermelon, cantaloupe, honeydew, banana, zucchini, cucumber, sunflower seeds

Peak risk August–October. New York's notorious ragweed season makes this cross-reactivity especially noticeable in late summer and fall.

Not medical advice. If you suspect OAS, speak with an allergist — it can sometimes progress, and symptoms that extend beyond the mouth should be evaluated.