Spring Allergies Are Expected To Be Brutal in These 11 States

This spring, allergies are expected to hit harder than usual, and the worst states for spring allergies are already emerging from the latest data. Longer pollen seasons, shifting climate patterns, and overlapping regional plant cycles are all converging to push counts higher and seasons earlier than we've seen in recent years.

Using 2026 rankings from the Asthma and Allergy Foundation of America (AAFA), alongside climate data from the National Oceanic and Atmospheric Administration and the most current allergy season forecast for the USA, we've zeroed in on where conditions are expected to be most severe. If you're planning a trip or just trying to get through your morning commute, these are the states where spring will hit hardest.

1. Idaho

Nobody saw Idaho coming. Boise has taken the No. 1 spot on the 2026 AAFA rankings, driven by earlier, longer pollen seasons, and more frequent high-count days. Tree and grass pollen are arriving sooner and lingering well past their usual window, and shifting climate patterns show no sign of reversing the trend. Even in a place known for its mountain air, spring may feel a lot less forgiving than expected.

2. Georgia

In Georgia, the "yellow haze" isn't just a saying—it coats cars, patio furniture, and anything left outside during peak season. Pine pollen surges in late February, followed by oak and other trees, creating an extended run of high counts through March and April. As one of the most popular warm-weather states year-round, that inviting climate helps keep allergy season going a little longer than most residents would prefer.

3. New York

After a stubborn winter, a sudden spring warm-up has tightened New York's bloom into a more concentrated window. Oak, birch, and maple—normally staggered—begin overlapping between late April and mid-May, pushing levels higher than usual and catching many residents off guard.

4. North Carolina

The rolling hills of the Piedmont allow pollen to linger on still days, helping cities like Raleigh and Winston-Salem rank among the most challenging in this year's AAFA standings. North Carolina is consistently one of the best spring destinations in the U.S., but it also ranks among the worst states for allergies in the spring. The same lush forests that draw tourists are also what make its air so difficult to breathe in.

5. Arkansas

Arkansas often flies under the radar, but its dense Ozark timberlands produce high tree pollen levels starting in early March. Warm, humid air keeps counts consistently elevated—expect a drawn-out stretch of overlapping peaks rather than one bad week. On high-count days, keeping windows closed and rinsing off after time outside can make a real difference.

6. Texas

In Texas, "Cedar Fever" is so intense it's frequently mistaken for the flu. Mild winters mean plant cycles never fully reset, turning morning jogs and weekend plans into a gamble from January straight through spring. Mountain cedar dominates the early months, oak follows in March, and grasses ramp up later—carrying symptoms well into the season.

7. Oklahoma

Oklahoma's wind is as much a problem as its plants. Open plains allow airborne irritants to travel long distances and can pull pollen in from neighboring states into cities like Tulsa, and by April, local tree pollen peaks as grass pollen begins to climb. Conditions can swing from manageable to extreme within a single afternoon, so checking forecasts daily is essential.

8. South Carolina

South Carolina's season arrives fast and refuses to leave. Pine appears as early as late February, with oak close behind, lingering in warm, humid air well into April. The state's historic gardens are stunning, but those grand oak canopies are doing far more to trigger allergies than the beautiful azaleas ever will.

9. Virginia

Allergy season in Virginia doesn't ease in—it ambushes you. A single warm front in April can push oak, birch, and ash into near-simultaneous peak release, turning car hoods green overnight. The stretch from April into early May is consistently the most intense; if you're exploring the best spring state parks across the U.S. and find yourself in the Shenandoah Valley, keep your antihistamines close.

10. California

After a wet winter, California is experiencing a superbloom that's as hard on the sinuses as it is beautiful. San Diego ranks among the top cities on the 2026 Allergy Capitals list, with tree pollen peaking in March, and grasses carrying the burden into early summer. Ocean breezes offer some relief, but the sheer volume coming off this year's lush hillsides still makes an impact.

11. Alabama

Warm air arrives early in Alabama, prompting pine trees to release pollen as soon as February, well before most people have thought to restock their medicine cabinet. With 2026 temperatures running warmer than average, the cycle has accelerated, leaving very little breathing room before the worst of the yellow haze sets in.

The Bottom Line on Spring Allergies in 2026

While spring allergies vary widely by region, the Southeast and Central U.S. continue to bear the brunt of the season, and 2026 is no exception. What’s changed is the reach. Places like Idaho, New York, and California are now seeing levels that rival those in the states with the highest pollen counts in the traditional allergy belts of the South. It’s a shift that’s becoming harder to ignore as climate change continues to lengthen and intensify allergy seasons.

Before you travel, checking local pollen forecasts is worth adding to your planning routine, since a single warm front can shift conditions almost overnight. Whether your destination is one of the many blooming flower fields across the U.S. or a bustling city center, tools like Pollen.com are a vital starting point for understanding what's in the air before you head out.

Simple preparation goes a long way from there. Timing your outdoor activities for early morning—when counts are typically at their lowest—and keeping allergy medication on hand can make the difference between a miserable trip and a memorable one.

Spring is one of the most beautiful times of year to explore this country—and with a little planning, the only thing you’ll be breathing in is fresh air and wide-open views.