Health experts say nearly one in three adults and more than one in four children in the United States report having seasonal allergies.

Experts say that as the leaves change for the autumn, allergens pollinate and stay in the air until the first hard frost.

"Fall allergens are still just as intense and can elicit all of the same symptoms,” says Dr. Jessica Hui, a pediatric allergist and immunologist with National Jewish Health.

Hui says that allergy symptoms can include nasal congestion, a runny nose and itchy, watery eyes. She says that this season can be one of the toughest times to get those symptoms under control.

“The weather is cooler, so you're going outside, you're doing yard work, you're keeping your windows open in your home. Well, all of these are exposing you to pollens,” says Hui.

To help stop that exposure, Hui says to change clothes after being outdoors, shower to get pollen off your skin and out of your hair, keep windows shut as much as possible – especially bedroom windows, avoid going outside in peak pollen times (late morning to mid-afternoon), clean the vents in your home and change your air filters.

"These are all things that not only are great for your home but can get rid of the different allergens that have kind of accumulated there throughout the year,” Hui says.

She says that for those already feeling fall allergy symptoms, prescription and over-the-counter nasal sprays can help, as can oral medications like antihistamines.

"Just know you have a toolbox, and you have strategies to really try to limit the amount of pollen exposures that you have,” says Hui.

She also says that everyone should keep in mind that some fall activities can expose a person to allergens, such as going to a pumpkin patch or hayride.

She says people can be exposed to mold found in vegetation.