Allergy Guides and Resources

Daily ranking of the US cities with the highest pollen levels right now. See where tree, grass, and weed pollen is hitting hardest today.

What drives spring tree pollen, which species cause the most symptoms in each region, and what you can do to manage your allergies from February through May.

Rain knocks pollen out of the air temporarily, but counts often spike 24 to 48 hours later as plants rehydrate and release more. The full story of rain, pollen, and thunderstorm asthma.

Pollen counts follow a daily cycle. Tree pollen peaks mid-morning, grass pollen midday, and counts drop in late afternoon. Plan your outdoor time around the curve.

There is no single pollen season. Tree, grass, and weed pollen overlap from February through November. A full calendar breakdown by type and region.

Wind is the primary way pollen travels. Learn why windy days are worse for allergies, how wind speed changes your exposure, and what to do about it.

An honest look at quercetin, butterbur, stinging nettle, vitamin C, and bromelain. What the evidence says, what it does not, and when OTC is the better choice.

Can Pollen Cause a Sore Throat?

Yes — post-nasal drip and direct airway inflammation from pollen are behind most allergy-season sore throats. Here's the mechanism and what actually helps.

Can Pollen Cause Hives?

Pollen can trigger hives and skin rashes through systemic histamine release and direct contact reactions. Learn which pollen types are most likely to cause skin symptoms.

Can Pollen Cause Itchy Skin?

Pollen causes itchy skin through histamine release, direct contact reactions, and eczema flares. Find out how to identify the pattern and stop the itch.

Can Pollen Cause Nosebleeds?

Pollen doesn't rupture blood vessels directly, but the inflammation and dryness it causes make nosebleeds far more likely during allergy season.

Can Pollen Cause Dizziness?

Pollen-driven congestion blocks the Eustachian tube and disrupts inner ear pressure, causing dizziness and lightheadedness during allergy season.

Can Pollen Cause Coughing?

Post-nasal drip and direct airway inflammation from pollen are behind most allergy-season coughs. Learn how to tell if your cough is pollen-related and how to treat it.

Can Pollen Cause Sneezing?

Sneezing is the body's most immediate response to inhaled pollen. Here's the science behind the reflex and how to stop it from taking over your day.

Can Pollen Cause Chest Pain?

Pollen causes chest tightness through allergic asthma and airway inflammation. Learn the difference between allergy-related chest symptoms and other causes.

Can Pollen Cause Styes?

Pollen drives the allergic eye itching that leads to eye-rubbing — the main way bacteria reach eyelid glands and form styes. How to break the cycle.

Can Pollen Cause Laryngitis?

Post-nasal drip, vocal cord inflammation, and throat-clearing from pollen allergies can cause hoarseness and laryngitis. How to protect your voice during pollen season.