Pollen count near you: where to check it, and what’s in season
Today’s pollen count comes from counting stations and forecast services, and we link the ones worth using. Below that, enter your ZIP code to see which pollens are typically in the air in your region this month, and what to do about them.
For today’s measured pollen count, use the National Allergy Bureau station counts from the American Academy of Allergy, Asthma & Immunology at pollen.aaaai.org; for a modeled ZIP-code forecast, use Pollen.com. As a rule of thumb, trees pollinate mostly February through April (from December or January in the South), grasses April through early June (all year in warm regions), and ragweed and other weeds from August until the first hard frost, peaking in early to mid-September; outdoor mold runs from July until the frost (AAFA, ACAAI, AAAAI).
Written by Curex editorial team
By ZIP code
What’s typically in season where you live
Enter your ZIP code to see which pollens are usually in the air in your region this month. This is a typical-season calendar built from AAAAI, ACAAI and AAFA guidance — not a pollen count or forecast.
Typical season for your region, not a forecast. Your ZIP code stays in your browser.
Typical seasons by region, month by month
● Typical season · ◐ Possible in some years or areas · blank: Usually low. Weather moves each year’s season earlier or later.
Most of the continental US
Trees lead in late winter and spring, grasses follow in late spring and early summer, and ragweed and other weeds run from August to the first hard frost (AAFA, ACAAI).
| Type | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Trees | Usually low | Typical season | Typical season | Typical season | Possible in some years or areas | Usually low | Usually low | Usually low | Usually low | Usually low | Usually low | Usually low |
| Grasses | Usually low | Usually low | Usually low | Typical season | Typical season | Typical season | Possible in some years or areas | Possible in some years or areas | Usually low | Usually low | Usually low | Usually low |
| Weeds / ragweed | Usually low | Usually low | Usually low | Usually low | Usually low | Usually low | Usually low | Typical season | Typical season | Typical season | Possible in some years or areas | Usually low |
| Outdoor mold | Usually low | Usually low | Usually low | Usually low | Usually low | Usually low | Typical season | Typical season | Typical season | Typical season | Possible in some years or areas | Usually low |
The South
In the South, trees can start pollinating as early as December or January, and grass pollen can be found all year (AAFA). Warm, humid weather also keeps outdoor mold around longer (AAFA).
| Type | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Trees | Possible in some years or areas | Typical season | Typical season | Typical season | Possible in some years or areas | Usually low | Usually low | Usually low | Usually low | Usually low | Usually low | Possible in some years or areas |
| Grasses | Possible in some years or areas | Possible in some years or areas | Possible in some years or areas | Typical season | Typical season | Typical season | Possible in some years or areas | Possible in some years or areas | Possible in some years or areas | Possible in some years or areas | Possible in some years or areas | Possible in some years or areas |
| Weeds / ragweed | Usually low | Usually low | Usually low | Usually low | Usually low | Usually low | Usually low | Typical season | Typical season | Typical season | Possible in some years or areas | Usually low |
| Outdoor mold | Possible in some years or areas | Possible in some years or areas | Possible in some years or areas | Possible in some years or areas | Possible in some years or areas | Possible in some years or areas | Typical season | Typical season | Typical season | Typical season | Possible in some years or areas | Possible in some years or areas |
California
AAFA names California among the warmer parts of the country where grass pollen can be found year-round; tree and weed timing follows the general pattern.
| Type | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Trees | Usually low | Typical season | Typical season | Typical season | Possible in some years or areas | Usually low | Usually low | Usually low | Usually low | Usually low | Usually low | Usually low |
| Grasses | Possible in some years or areas | Possible in some years or areas | Possible in some years or areas | Typical season | Typical season | Typical season | Possible in some years or areas | Possible in some years or areas | Possible in some years or areas | Possible in some years or areas | Possible in some years or areas | Possible in some years or areas |
| Weeds / ragweed | Usually low | Usually low | Usually low | Usually low | Usually low | Usually low | Usually low | Typical season | Typical season | Typical season | Possible in some years or areas | Usually low |
| Outdoor mold | Usually low | Usually low | Usually low | Usually low | Usually low | Usually low | Typical season | Typical season | Typical season | Typical season | Possible in some years or areas | Usually low |
Alaska, Hawaii and US territories
The published season guidance describes the mainland pattern, so we do not show a calendar here. Use a local count or ask a local allergist about your area.
Live counts
Where to check today’s pollen count
Curex does not measure pollen and this page shows no live counts. For today’s numbers, use a source that does, and check the date and the location of each reading.
- National Allergy Bureau (AAAAI). The NAB pollen and mold counts are reported by certified counting stations across the US, run under the American Academy of Allergy, Asthma & Immunology. Pick the station nearest you; counts are measured from air samples, so a reading describes a past sampling period, not a prediction.
- Pollen.com. Pollen.com publishes a free daily pollen forecast by ZIP code. It is a modeled forecast from a commercial provider, not a station count.
- Weather apps. Many weather apps show a pollen level. Most are modeled forecasts; check which source the app uses before relying on it for planning.
Pollen type
Tree pollen
- When. Tree pollen is the first pollen of the year and causes most spring allergy symptoms. Across the US trees pollinate mostly from February through April; in the South they can start as early as December or January (AAFA). In many areas spring allergies begin in February and last until early summer (ACAAI).
- Symptoms. Sneezing, a runny or stuffy nose, itchy eyes, nose and throat, and watery eyes; pollen can also make asthma worse.
- What helps. Keep windows closed on high-pollen days, shower and change after time outdoors, and plan outdoor time when counts are lower (AAAAI). If you have had spring symptoms before, allergists recommend starting medicine about two weeks before they usually begin (ACAAI).
- When to see an allergist. Over-the-counter medicines are not controlling your symptoms, symptoms come back every season or last much of the year, you wheeze, cough or have asthma that flares with pollen, or you want to treat the allergy itself with immunotherapy. An allergist can confirm which pollens you react to with a skin or blood test.
Pollen type
Grass pollen
- When. Grasses cause most late-spring and summer pollen symptoms, mostly from April through early June. In warmer parts of the country, such as California, Texas and the South, grass pollen can be found all year (AAFA).
- Symptoms. The same hay fever pattern as trees — sneezing, congestion, itchy and watery eyes — often worse after mowing or time on grass.
- What helps. Let someone else mow if you can, shower after yard work or sport on grass, and dry laundry indoors on high-pollen days (AAFA). Grass pollen allergy is one of the allergies with FDA-approved under-the-tongue tablets (Grastek, Oralair), prescribed by a clinician.
- When to see an allergist. Over-the-counter medicines are not controlling your symptoms, symptoms come back every season or last much of the year, you wheeze, cough or have asthma that flares with pollen, or you want to treat the allergy itself with immunotherapy. An allergist can confirm which pollens you react to with a skin or blood test.
Pollen type
Ragweed and other weed pollen
- When. Weed pollen arrives in late summer and runs until the first hard frost (AAFA). Ragweed, the main cause of fall allergies, blooms from August to November and in many areas peaks in early to mid-September (ACAAI). It used to run from mid-August through September; in many parts of the country it now starts in early August and lasts through October (AAAAI).
- Where. Ragweed grows in nearly every state (AAAAI), and especially on the East Coast and in the Midwest (ACAAI).
- Symptoms. Sneezing, a stuffy or runny nose, itchy eyes and throat, and worse asthma in people who have it.
- What helps. Track counts for your area to plan outdoor time (AAAAI), and start medicine before late summer if ragweed bothers you every year. Short ragweed has an FDA-approved under-the-tongue tablet (Ragwitek).
- When to see an allergist. Over-the-counter medicines are not controlling your symptoms, symptoms come back every season or last much of the year, you wheeze, cough or have asthma that flares with pollen, or you want to treat the allergy itself with immunotherapy. An allergist can confirm which pollens you react to with a skin or blood test.
Not pollen, same season
Outdoor mold
- When. Outdoor mold spores cause symptoms most often from July until the first hard frost; in warm, humid climates symptoms can last all year (AAFA). Molds grow quickly in heat and high humidity (ACAAI).
- Symptoms. A runny or stuffy nose, postnasal drip, sneezing and itchy eyes and nose; mold can also trigger asthma (AAFA). Because mold season overlaps with ragweed, it is easy to blame the wrong trigger.
- What helps. Limit time outdoors when mold counts are high, clear dead leaves and plant debris, and keep indoor humidity between 30% and 50% (AAFA). The NAB station pages report mold spore counts alongside pollen.
- When to see an allergist. Over-the-counter medicines are not controlling your symptoms, symptoms come back every season or last much of the year, you wheeze, cough or have asthma that flares with pollen, or you want to treat the allergy itself with immunotherapy. An allergist can confirm which pollens you react to with a skin or blood test.
Treating the cause
Treating seasonal allergies, not just the season
Antihistamines, nasal sprays and eye drops treat symptoms while you take them. Allergen immunotherapy — allergy shots, under-the-tongue tablets or allergy drops — gradually makes the immune system less reactive to the pollens you are allergic to, and is the treatment allergists offer when medicines are not enough.
Curex offers allergy drops and at-home allergy shots for pollen allergies, prescribed after an IgE blood test and supervised online, with no clinic visits. See how Curex works, allergy drops vs allergy shots and all listed plans.
Personalized allergy drops are compounded by a specialty pharmacy and prescribed off-label from FDA-approved allergen extracts, the same extracts used in allergy shots; compounded drops are not individually evaluated by the FDA. Anyone with severe or poorly controlled asthma, a history of anaphylaxis or who is pregnant should be evaluated by an allergist in person first.
Seasonal allergy treatment
Treat pollen allergy at home, before the season starts
Curex prescribes daily allergy drops for pollen, dust mite, mold and pet allergies, and at-home allergy shots for environmental allergies, matched to your IgE blood test and supervised online by Curex physicians. Environmental drops are $79/month plus a video-visit copay, or $99/month self-pay with consultations included; at-home shots are $129/month plus a copay, or $149/month self-pay. Insurance is accepted for testing and consultations. Most patients notice fewer symptoms within 3–6 months, so starting before your season gives treatment time to work. The drops need no refrigeration.
Frequently Asked Questions
This page does not show live counts. For today’s measured counts, use the National Allergy Bureau station map from the American Academy of Allergy, Asthma & Immunology at pollen.aaaai.org and pick the station nearest you. For a modeled daily forecast by ZIP code, Pollen.com is free. Enter your ZIP code above to see which pollen types are typically in season in your region this month.
No. The ZIP code tool shows a typical-season calendar for your region, based on guidance from AAAAI, ACAAI and AAFA. Actual levels depend on weather and vary from day to day, so use a live source for today’s count or forecast.
A pollen count is measured: a counting station samples the air and reports how much pollen it caught over a past period. A forecast is a prediction from weather and season models. Counts are more precise for one place; forecasts look ahead and cover more places.
For measured counts, the National Allergy Bureau (pollen.aaaai.org) reports certified station data. For a ZIP code forecast, Pollen.com is free, and many weather apps show a modeled pollen level. Whichever you use, check whether it is a measured count or a forecast and which area it covers.
Mostly February through April across the US, and as early as December or January in the South, according to AAFA. ACAAI notes that in many areas spring allergies begin in February and last until early summer.
Mostly April through early June. In warmer parts of the country, such as California, Texas and the South, grass pollen can be found all year (AAFA).
Ragweed blooms from August to November and in many areas peaks in early to mid-September (ACAAI). AAAAI notes that in many parts of the country it now starts in early August and lasts through October. Weed pollen in general runs until the first hard frost (AAFA).
Ragweed and other weeds can pollinate until the first hard frost, and outdoor mold lasts until the frost too. In the South, trees can start pollinating in December or January, and grass pollen can be present all year in warm regions (AAFA). In colder regions, pollen is usually low from late fall through January.
No. Mold spores are a different allergen, but outdoor mold season (July to the first hard frost, per AAFA) overlaps with grass and ragweed, and the symptoms look the same. An allergy test tells you which one you react to.
When over-the-counter medicines do not control your symptoms, when symptoms return every season or last much of the year, when you wheeze or have asthma that flares with pollen, or when you want immunotherapy to treat the allergy itself. A skin or blood test confirms which pollens you react to.
Yes. Allergen immunotherapy — allergy shots, FDA-approved under-the-tongue tablets for grass and short ragweed, or personalized allergy drops prescribed off-label — gradually reduces the immune response to the pollens you are allergic to. A full course typically lasts 3–5 years.
Curex treats tree, grass and weed pollen, mold, dust mite and pet allergies with prescription allergy drops or at-home allergy shots in all 50 states, after an IgE blood test at a local lab, by an at-home phlebotomist or with a self-collection kit. Environmental drops are $79/month plus a video-visit copay, or $99/month self-pay with consultations included. Most patients notice fewer symptoms within 3–6 months. Take the free quiz at getcurex.com/quiz to see if you may be a candidate.
If you experience sudden difficulty breathing, throat swelling, or other signs of anaphylaxis, call 911. A prescribed epinephrine auto-injector is the first-line treatment — not antihistamines.
This content is for informational purposes only and does not constitute medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider with questions about a medical condition. Content reviewed by board-certified allergists at Curex.
Season timing is typical, not a forecast, and comes from AAAAI, ACAAI and AAFA patient guidance. This page is general information, not medical advice.
Sources
Where the facts come from
Sources
- AAAAI National Allergy Bureau: pollen and mold counts by station
- Pollen.com: daily pollen forecast by ZIP code
- AAFA: Pollen Allergies
- AAFA: Tree Pollen Allergy
- AAFA: Grass Pollen Allergy
- AAFA: Sneezing this season? Weed pollen might be the reason
- AAFA: Mold Allergy
- ACAAI: Seasonal Allergies
- AAAAI: Ragweed Allergy
- AAAAI: Outdoor Allergens
- AAAAI: Spring Allergies
- AAAAI: Find an allergist
- FDA: Grastek
- FDA: Oralair
- FDA: Ragwitek
- Curex canonical pricing, client commercial terms as of 2026-10-12
Keep reading
Related guides
- Allergy drops vs allergy shotsThe evidence, the visit burden, costs and who each route fits.
- Alternatives to allergy shotsFDA-approved tablets, personalized drops, at-home shots and medicines.
- Allergy drops safetyWhat reactions are normal, and when to get help.
- How Curex worksFrom at-home testing to daily drops, supervised online.