Why Are My Allergies Worse in August? A Minnesota Guide to Ragweed, Mold & Late-Summer Symptoms

If August suddenly has you sneezing, congested or rubbing itchy eyes, you aren’t necessarily imagining a seasonal shift.

Late summer is an important transition point for seasonal allergies. Ragweed pollen commonly begins increasing in August, while outdoor mold levels can also be high during summer and fall. For people sensitive to these triggers, that can mean a new wave of symptoms just when spring allergy season seemed safely behind them.

For families in St. Cloud and throughout Central Minnesota, understanding what changes in late summer can make it easier to recognize patterns and decide what kind of support may be appropriate.

Why Do Seasonal Allergies Flare in August?

Spring gets most of the attention when people talk about allergies, but pollen seasons change throughout the year.

Trees are more prominent earlier in the season. Grasses become an issue later. By late summer, ragweed becomes one of the major airborne pollen triggers.

The American Academy of Allergy, Asthma & Immunology notes that ragweed pollination historically began around mid-August, but in many areas it now begins in early August and can continue into October.

That makes August something of a transition month: summer activities are still happening, but fall allergy season may already be underway.

What Is Ragweed—and Why Can It Cause So Much Trouble?

Ragweed is a wind-pollinated plant that commonly grows in open areas.

Because its pollen travels through the air, you don’t have to see ragweed growing in your own yard to be exposed to it. AAAAI notes that the ragweed growing season generally begins in July or August in much of the country and continues until the first hard frost.

For someone with allergic rhinitis, exposure may lead to sneezing, nasal congestion, a runny nose, or itchy and watery eyes.

Checking local pollen levels can also be useful when you are trying to determine whether symptoms follow an environmental pattern. Higher pollen or mold counts mean a greater likelihood of symptoms for people who are sensitive to those allergens.

Don’t Forget About Mold

Ragweed isn’t the only late-summer environmental trigger.

Outdoor mold levels are typically highest during summer and fall, according to the National Institute of Environmental Health Sciences. Mold thrives in damp environments and decaying organic material, which means moisture, vegetation and changing seasonal conditions can all contribute to exposure.

Indoors, mold can develop where excess moisture is present, including around leaks, windows, pipes or areas that have experienced flooding.

For someone with a mold allergy, symptoms can include sneezing, congestion, a runny nose and itchy or watery eyes.

If your symptoms seem noticeably worse after working outdoors, spending time around damp vegetation or being in a particular indoor environment, that pattern is worth noting.

Is It Allergies or a Late-Summer Cold?

This is one of the most common questions people ask when congestion suddenly appears.

Allergies and colds can look similar, but there are a few clues.

Allergies frequently cause itchiness—particularly itchy eyes, nose or throat—along with sneezing, congestion and watery eyes. Symptoms may also appear relatively quickly after exposure to a trigger.

Colds can cause similar nasal symptoms but are more likely to come with a sore throat, fever or body aches.

That distinction isn’t foolproof, however. If symptoms are severe, unusual, persistent or affecting breathing, talk with a qualified healthcare professional rather than assuming allergies are the cause.

How Can You Reduce Late-Summer Allergen Exposure?

You cannot control everything floating through the Minnesota air, but you can reduce some exposure.

Pay attention to pollen levels on days when symptoms are worse. After extended time outdoors, changing clothes and showering can help remove pollen carried inside on your skin and hair. Keeping an eye on moisture inside your home is also important because controlling moisture is central to preventing indoor mold growth.

Most importantly, look for patterns rather than treating every uncomfortable day as an isolated event.

That information becomes useful whether you ultimately speak with your primary care provider, an allergist or a natural wellness practitioner.

What About Food and Environmental “Sensitivities”?

This is an area where terminology matters.

A medically diagnosed allergy involves an immune response and should be evaluated using appropriate medical care and validated allergy testing.

People may also use the word sensitivity more broadly when they notice that certain foods, environments or exposures seem to coincide with how they feel.

Stepping Stone Natural Health works with clients who want to explore those broader wellness patterns. The clinic lists food and environmental intolerances among the concerns clients commonly bring to an EDS evaluation.

An EDS evaluation should not, however, be considered a substitute for medical allergy testing.

Where Does Electro-Dermal Screening Fit In?

At Stepping Stone Natural Health in St. Cloud, Electro-Dermal Screening (EDS) is used as a non-invasive wellness tool.

During an EDS evaluation, electrical resistance is measured along specific acupuncture points associated with the body's meridians. The information is then considered as part of an individualized wellness conversation that may include nutrition, lifestyle and other natural support.

The goal isn't to label every symptom with a diagnosis.

It is to look more closely at the patterns you have been experiencing and develop a wellness plan that is personalized to you.

Frequently Asked Questions About August Allergies

Why do my allergies get worse in August?

Ragweed is one likely explanation. Ragweed pollen season often begins in August and can continue well into fall. Outdoor mold levels can also be high during summer and fall.

What are common ragweed allergy symptoms?

Common seasonal allergy symptoms include sneezing, a runny or congested nose and itchy or watery eyes.

Can mold cause allergy symptoms?

Yes. People with mold allergies may experience symptoms including sneezing, nasal congestion, a runny nose and itchy or watery eyes after exposure.

How can I tell allergies from a cold?

Itchy eyes, nose or throat often point more toward allergies, while fever, body aches or a sore throat are more common with colds. Symptoms alone cannot always tell you the cause.

Can Electro-Dermal Screening diagnose allergies?

No. EDS is used at Stepping Stone Natural Health as a wellness screening tool. It should not replace evaluation or allergy testing from a licensed medical provider or allergist.

Feeling Different as the Seasons Change?

Late summer in Minnesota brings more than shorter days and back-to-school schedules. Environmental exposures are changing, too.

If August seems to bring a predictable change in how you feel, start paying attention to the pattern. That information can help you make better decisions about your wellness and determine when additional support makes sense.

Stepping Stone Natural Health provides personalized Electro-Dermal Screening and nutritional wellness support for clients of all ages in St. Cloud and throughout Central Minnesota. Call 320-217-5388 to schedule an evaluation or to learn more.